27.32% is the change from 538 to 685
Calculation steps:
[( 685 - 538 ) ÷ 538] x 100 = 27.32%
Formula
Percentage change = [(685 - 538) / 538] x 100
Subtract the new number by the original number
685 - 538 = 147
147 ÷ 538 = 0.2732342007434944
0.2732342007434944 x 100 = 27.32%