31.87% is the change from 502 to 662
Calculation steps:
[( 662 - 502 ) ÷ 502] x 100 = 31.87%
Formula
Percentage change = [(662 - 502) / 502] x 100
Subtract the new number by the original number
662 - 502 = 160
160 ÷ 502 = 0.3187250996015936
0.3187250996015936 x 100 = 31.87%