17.73% is the change from 502 to 591
Calculation steps:
[( 591 - 502 ) ÷ 502] x 100 = 17.73%
Formula
Percentage change = [(591 - 502) / 502] x 100
Subtract the new number by the original number
591 - 502 = 89
89 ÷ 502 = 0.17729083665338646
0.17729083665338646 x 100 = 17.73%