Sakti means the energies of Krsna (God) and includes matter (material energy) that takes up 25% of the spiritual sky. There are many categories of living entities also under the heading sakti.

The percentage of Krsna's 64 qualities that His expansions have aew explained here. 

When Visnu is in front of the word sakti, this means they are direct expansions of Krsna like the Visnu-tattva are.

So, how many qualities do the different categories of living entities have?

The percentage is based on the number of Krsna's 64 qualities they have.

For example, Visnu-tattva and Visnu-sakti-tattva Forms of God have 60 of Krsna's 64 qualities, which is 93.75% of Krsna's qualities.

Siva-tattva has 55 of Krsna's 64 qualities, which is 84.375% of Krsna's qualities.

Jiva-tattva has 50 of Krsna's 64 qualities, which is 78.125% of Krsna's qualities.

Siva-tattva (84.375%) is between Visnu-tattva (93.75%) and the jiva-tattva or jiva-soul (78.125%).

Krsna always has 100% of His own qualities in full and this is why Krsna is Supreme Personality of Godhead and cause of all causes. 

Krsna is the original Form of Godhead from whom all His Visnu-tattva, Visnu-sakti-tattva, Siva-tattva and jiva-tattva forms expand from.

This means the only difference between Srimati Radharani, Balarama, Maha-Visnu, Ramachandra etc, and Lord Krsna is Lord Krsna has an extra 4 qualities in full more than them, although they may exhibit those 4 unique qualities partially.

Therefore, not even Srimati Radharani, Krsna’s consort, or Balarama (Krsna's older brother) always have those 4 extra unique qualities like Krsna always has perpetually.

The 64 qualities of Krsna.

Only Krsna has 64 qualities in full because He is the original Supreme Personality of Godhead and cause of all causes.

As said above, the Visnu-tattva (Visnu/Narayana) expansions of Krsna, who are also God, have only 60 of Krsna's 64 qualities, or 93.75% of Krsna's qualities.

Some Vedic scholars and modern-day Hindu academics can not understand why Krsna has 4 more qualities than Visnu/Narayana, and why Krsna is the original Supreme Personality of Godhead and cause of all causes and not Visnu.

They cannot understand that Visnu/Narayana are expansions of Krsna and not the other way around.

Krsna does not originate from Visnu as many in India today wrongly believe.

Even the word Hindu is not found in Vedic texts because it is an alien word introduced by primitive invaders to the Indian sub-continent around 2,400 to 1,500 years ago. 

HERE HERE HERE

As said above, Krsna is not an expansion of Visnu as many Hindus wrongly believe.

The fact is Krsna is the original Supreme Personality of Godhead and cause of all causes from who all Visnu forms originate from.

The 4 qualities or attributes Visnu or Narayana do NOT have in full are as follows-

(1) Krsna is the performer of wonderful varieties of pastimes (especially His childhood pastimes).

(2) Krsna is surrounded by devotees endowed with wonderful love of Godhead.

(3) Krsna can attract all living entities all over the universes by playing on His flute.

(4) Krsna has a wonderful excellence of beauty which can not be rivalled anywhere in the creation.

These four qualities out of Krsna's 64 attributes are important to understand because, as said, not even Visnu/Narayana forms of God have them in full, they only sometimes exhibited partially by the Visnu-tattva expansions.

The expansions of Krsna are-

1 - Visnu-tattva, who have 60 of Krsna's 64 qualities, which is 93.75% of Krsna's qualities.

2 - Visnu-sakti-tattvas (this category of sakti potency means Visnu-tattva namely Srimati Radharani, who also has 60 of Krsna's 64 qualities or 93.75% of Krsna's qualities.

3 - Siva-tattva has 55 qualities out of Krsna's 64 attributes or 84.375% of Krsna's qualities.

4 - Jiva-tattva souls has 50 qualities of Krsna's 64 attributes, which is 78.125% of Krsna's qualities.

The Supreme Personality of Godhead Lord Krsna has all sixty-four transcendental qualities in full.

The difference between Krsna (64 qualities) and Visnu/Narayana (60 qualities) are the four extra qualities mentioned above that only Krsna has always.

The full extent of Krsna's wonderful qualities are inconceivable.

Here are Krsna's 64 qualities or attributes-

(1) Beautiful features of the entire body

(2) Marked with all auspicious characteristics

(3) Extremely pleasing

(4) Effulgent

(5) Strong

(6) Ever youthful

(7) Wonderful linguist

(8) Truthful

(9) Talks pleasingly

(10) Fluent

(11) Highly learned

(12) Highly intelligent

(13) Genius

(14) Artistic

(15) Extremely clever

(16) Expert

(17) Grateful

(18) Firmly determined

(19) An expert judge of time and circumstances

(20) Sees and speaks on the authority of Vedas (scriptures)

(21) Pure

(22) Self-controlled

(23) Steadfast

(24) Forbearing

(25) Forgiving

(26) Grave

(27) Self-satisfied

(28) Possessing equilibrium

(29) Magnanimous

(30) Religious

(31) Heroic

(32) Compassionate

(33) Respectful

(34) Gentle

(35) Liberal

(36) Shy

(37) The protector of surrendered souls

(38) Happy

(39) The well-wisher of devotees

(40) Controlled by love

(41) all-auspicious

(42) Most powerful

(43) all-famous

(44) Popular

(45) Partial to devotees

(46) Very attractive to all women

(47) all-worship able

(48) all-opulent

(49) all-honourable

(50) The supreme controller.

(51) Changeless.

(52) all-cognizant.

(53) Ever fresh.

(54) sac-cid-ananda-vigraha, a eternal blissful bodily Form.

(55) Possessing all mystic perfections.

(56) He has inconceivable potency.

(57) Uncountable universes generate from His body.

(58) He is the original source of all incarnations.

(59) He is the giver of salvation to the enemies whom He kills.

(60) He is the attractor of liberated souls.

As explained  above, besides these sixty transcendental qualities, Krsna has four more not manifested even in the Visnu/Narayana form of Godhead, what to speak of the demigods or living entities.

They are as follows-

(61) He is the performer of wonderful varieties of pastimes (especially His childhood pastimes).

(62) He is surrounded by devotees endowed with wonderful love of Godhead.

(63) He can attract all living entities all over the universes by playing on His flute.

(64) He has a wonderful excellence of beauty that can not be rivalled anywhere in the creation.

The Absolute Truth Lord Krsna is anandamaya (desiring to increase His joy), hence, from Krsna's original form, He expands and becomes many.

These emanations from the Supreme Person are of two categories: full expansions and partially manifested expansions.

The Lord's various full and partial expansions and the Lord Himself simultaneously co-exist, only appearing to manifest under the influence of time.

These expansions of Krsna are known as Visnu-tattva Forms of God, and they are also the Supreme Absolute Truth such as-

Balarama, 

Pradyumna, 

Ramachandra, 

Narsingadeva,  

Narayana, 

Visnu,

Maha-Visnu, 

Garbhodakashayi Visnu, etc

And then there is Visnu-sakti-tattvas like Radharani and many other inhabitants including many gopis and gopas who are technically Krsna Himself playing a role in His own Vrindavana pastimes alongside the jiva-souls.

All Visnu-tattva and Visnu-sakti-tattva expansions of Krsna accept their own role in the mood of Servitor to the original Supreme Being Lord Krsna even though they are Krsna in another role.

For example, Visnu and Narayana Forms are known by millions of different names on their particular Vaikuntha Planet in the Spiritual sky.

This relationship is the foundation of Vedic monotheism, which encompasses the inconceivable, absolute personal nature of the original Godhead.

As explained above, Lord Krsna possesses two other expansive qualities known as Siva-tattva and jiva-tattva (jiva-souls). 

Together with Visnu-tattva and Visnu-sakti-tattvas, these four categories of personalities are representative of the Absolute Person's (Krsna's) internal, external, and marginal energies.

The Lord expands Himself as Lord Siva and Lord Brahma, and the marginal living entities (jiva-souls) are also expansions.

Like us, Lord Brahma is also jiva-tattva (78.125% of Krsns's qualities)

Lord Siva is between Visnu-tattva and jiva-tattva (84.375% of Krsns's qualities)

Lord Visnu/Narayana is Visnu-tattva (93.75% of Krsns's qualities)

And Radharani, although none different  than Krsna is also Visnu-sakti-tattva (93.75% of Krsns's qualities), which only means she does not always exhibit Krsna's four extra qualities always in full.

When Krsna desired to experience loving affection and exchanges with a woman, He expanded Himself as Srimati Radharani, who is none different than Krsna.

Visnu-tattva and jiva-tattva are different categories of living entities but are all expansions of the Supreme Personality of Godhead Lord Krsna.

Therefore, as a reminder, we can summarize as follows-

The reason why Krsna is called Param Purushottam, Purnavatar or Supreme Personality of Godhead and cause of all causes is because Krsna has all 64 qualities in full.

Srila Prabhupada - "Learned scholars in transcendental subjects have carefully analyzed the summum bonum Krsna to have sixty-four principal attributes.

All the expansions or categories of the Lord possess only some percentages of these attributes. But Sri Krsna is the possessor of the attributes cent percent.

His personal expansions such as svayam-prakasa, tad-ekatma up to the categories of the avataras who are all visnu-tattva, possess up to 93.75% of these transcendental attributes." (Srimad Bhagavatam 1.3.29)

Lord Siva is neither avatara nor avesa, nor in between them; as said above he possesses 84.375% of Krsna's qualities.

The jiva-souls on the other hand possess up to their limit of 78.125% of Krsna's qualities.

In the conditioned state of material existence, the marginal living entities (jiva-souls) exhibit these attributes in very minute quantity, influenced by pious and impious actions while only in the human species.

Only in the spiritual world is the jiva-soul's full potential fully experienced.

The most perfect living being in this material universe is Brahma, the supreme administrator within his material universe that is deep inside the surrounding Brahmanda greater universe that originates from the breathing of Maha-Visnu.

There are billions of universes and billions of Garbhodakashayi Visnus, Brahmas and other demigods, but only one Maha-Visnu.

All the demigods except Siva have 78.125% of Krsns's qualities, they each have 50 of Krsna's 64 qualities. 

All the jiva-souls within the species of material life also possess these same qualities in their full spiritual potential but are presently covered by material energy.

The standard of perfection for a human being is to develop their full potential of up to 78.125% in full. 

The marginal living entities or jiva-souls can never possess qualities like Siva, Visnu, Radharani, or Krsna.

A living being or marginal living entity (jiva-souls) can become godly by developing their full potential of 78.125% of Krsns's qualities, but can never become a God like Krsna or Visnu (93.75%) or Siva (84.375%).

Although, as said above, the jiva-souls can become a Brahma in due course.

HERE HERE HERE

The godly living beings who are all residents of the Vaikuntha planets in the spiritual sky are eternal associates of Visnu in different spiritual planets called Hari-dhama and Mahesa-dhama.

However, the abode of Lord Krsna Goloka Vrindavana is above all the Vaikuntha planets and is called Krsnaloka or Goloka Vrndavana.

The marginal living entity (jiva-soul) can develop 78.125% of the above attributes in full, which is their full potential; they can NEVER become Krsna or Visnu.

By reaching their full potential of 78.125%, the jiva-souls can AGAIN enter the planet of Krsna-loka (Goloka-Vrindavana) after leaving their present decaying material bodily vessel.*