2647.62% is the change from 21 to 577
Calculation steps:
[( 577 - 21 ) ÷ 21] x 100 = 2647.62%
Formula
Percentage change = [(577 - 21) / 21] x 100
Subtract the new number by the original number
577 - 21 = 556
556 ÷ 21 = 26.476190476190474
26.476190476190474 x 100 = 2647.62%