39.81% is the change from 515 to 720
Calculation steps:
[( 720 - 515 ) ÷ 515] x 100 = 39.81%
Formula
Percentage change = [(720 - 515) / 515] x 100
Subtract the new number by the original number
720 - 515 = 205
205 ÷ 515 = 0.39805825242718446
0.39805825242718446 x 100 = 39.81%