53.39% is the change from 502 to 770
Calculation steps:
[( 770 - 502 ) ÷ 502] x 100 = 53.39%
Formula
Percentage change = [(770 - 502) / 502] x 100
Subtract the new number by the original number
770 - 502 = 268
268 ÷ 502 = 0.5338645418326693
0.5338645418326693 x 100 = 53.39%