41.65% is the change from 509 to 721
Calculation steps:
[( 721 - 509 ) ÷ 509] x 100 = 41.65%
Formula
Percentage change = [(721 - 509) / 509] x 100
Subtract the new number by the original number
721 - 509 = 212
212 ÷ 509 = 0.4165029469548134
0.4165029469548134 x 100 = 41.65%