We don't ask for a percentage but that you give as God purposes on your heart from a willing mind and according to what you have.

2 Corinthians 8:12 NKJV

12 For if there is first a willing mind, it is accepted according to what one has, and not according to what he does not have.

2 Corinthians 9:6-8 NKJV

6 But this I say: He who sows sparingly will also reap sparingly, and he who sows bountifully will also reap bountifully. 7 So let each one give as he purposes in his heart, not grudgingly or of necessity; for God loves a cheerful giver. 8 And God is able to make all grace abound toward you, that you, always having all sufficiency in all things, may have an abundance for every good work.

1 Corinthians 9:13-14 NLV

13 You must know that those who work in the house of God get their food there. Those who work at the altar in the house of God get a part of the food that is given there. 14 The Lord has said also that those who preach the Good News should get their living from those who hear it.

Galatians 6:6 NASB

6 The one who is taught the word is to share all good things with the one who teaches him.

Philippians 1:4-5 NIV

4 In all my prayers for all of you, I always pray with joy 5 because of your partnership in the gospel from the first day until now,