35.46% is the change from 502 to 680
Calculation steps:
[( 680 - 502 ) ÷ 502] x 100 = 35.46%
Formula
Percentage change = [(680 - 502) / 502] x 100
Subtract the new number by the original number
680 - 502 = 178
178 ÷ 502 = 0.3545816733067729
0.3545816733067729 x 100 = 35.46%