22.68% is the change from 538 to 660
Calculation steps:
[( 660 - 538 ) ÷ 538] x 100 = 22.68%
Formula
Percentage change = [(660 - 538) / 538] x 100
Subtract the new number by the original number
660 - 538 = 122
122 ÷ 538 = 0.22676579925650558
0.22676579925650558 x 100 = 22.68%