17.29% is the change from 509 to 597
Calculation steps:
[( 597 - 509 ) ÷ 509] x 100 = 17.29%
Formula
Percentage change = [(597 - 509) / 509] x 100
Subtract the new number by the original number
597 - 509 = 88
88 ÷ 509 = 0.17288801571709234
0.17288801571709234 x 100 = 17.29%