15.17% is the change from 501 to 577
Calculation steps:
[( 577 - 501 ) ÷ 501] x 100 = 15.17%
Formula
Percentage change = [(577 - 501) / 501] x 100
Subtract the new number by the original number
577 - 501 = 76
76 ÷ 501 = 0.15169660678642716
0.15169660678642716 x 100 = 15.17%