21.93% is the change from 538 to 656
Calculation steps:
[( 656 - 538 ) ÷ 538] x 100 = 21.93%
Formula
Percentage change = [(656 - 538) / 538] x 100
Subtract the new number by the original number
656 - 538 = 118
118 ÷ 538 = 0.21933085501858737
0.21933085501858737 x 100 = 21.93%