40.58% is the change from 515 to 724
Calculation steps:
[( 724 - 515 ) ÷ 515] x 100 = 40.58%
Formula
Percentage change = [(724 - 515) / 515] x 100
Subtract the new number by the original number
724 - 515 = 209
209 ÷ 515 = 0.4058252427184466
0.4058252427184466 x 100 = 40.58%