7.17% is the change from 502 to 538
Calculation steps:
[( 538 - 502 ) ÷ 502] x 100 = 7.17%
Formula
Percentage change = [(538 - 502) / 502] x 100
Subtract the new number by the original number
538 - 502 = 36
36 ÷ 502 = 0.07171314741035857
0.07171314741035857 x 100 = 7.17%