17.09% is the change from 509 to 596
Calculation steps:
[( 596 - 509 ) ÷ 509] x 100 = 17.09%
Formula
Percentage change = [(596 - 509) / 509] x 100
Subtract the new number by the original number
596 - 509 = 87
87 ÷ 509 = 0.17092337917485265
0.17092337917485265 x 100 = 17.09%