66.33% is the change from 502 to 835
Calculation steps:
[( 835 - 502 ) ÷ 502] x 100 = 66.33%
Formula
Percentage change = [(835 - 502) / 502] x 100
Subtract the new number by the original number
835 - 502 = 333
333 ÷ 502 = 0.6633466135458167
0.6633466135458167 x 100 = 66.33%