40.47% is the change from 509 to 715
Calculation steps:
[( 715 - 509 ) ÷ 509] x 100 = 40.47%
Formula
Percentage change = [(715 - 509) / 509] x 100
Subtract the new number by the original number
715 - 509 = 206
206 ÷ 509 = 0.40471512770137524
0.40471512770137524 x 100 = 40.47%