29.03% is the change from 403 to 520
Calculation steps:
[( 520 - 403 ) ÷ 403] x 100 = 29.03%
Formula
Percentage change = [(520 - 403) / 403] x 100
Subtract the new number by the original number
520 - 403 = 117
117 ÷ 403 = 0.2903225806451613
0.2903225806451613 x 100 = 29.03%