7.63% is the change from 577 to 621
Calculation steps:
[( 621 - 577 ) ÷ 577] x 100 = 7.63%
Formula
Percentage change = [(621 - 577) / 577] x 100
Subtract the new number by the original number
621 - 577 = 44
44 ÷ 577 = 0.07625649913344887
0.07625649913344887 x 100 = 7.63%