38.96% is the change from 521 to 724
Calculation steps:
[( 724 - 521 ) ÷ 521] x 100 = 38.96%
Formula
Percentage change = [(724 - 521) / 521] x 100
Subtract the new number by the original number
724 - 521 = 203
203 ÷ 521 = 0.3896353166986564
0.3896353166986564 x 100 = 38.96%