31.14% is the change from 501 to 657
Calculation steps:
[( 657 - 501 ) ÷ 501] x 100 = 31.14%
Formula
Percentage change = [(657 - 501) / 501] x 100
Subtract the new number by the original number
657 - 501 = 156
156 ÷ 501 = 0.31137724550898205
0.31137724550898205 x 100 = 31.14%