33.5% is the change from 403 to 538
Calculation steps:
[( 538 - 403 ) ÷ 403] x 100 = 33.5%
Formula
Percentage change = [(538 - 403) / 403] x 100
Subtract the new number by the original number
538 - 403 = 135
135 ÷ 403 = 0.3349875930521092
0.3349875930521092 x 100 = 33.5%