65.54% is the change from 502 to 831
Calculation steps:
[( 831 - 502 ) ÷ 502] x 100 = 65.54%
Formula
Percentage change = [(831 - 502) / 502] x 100
Subtract the new number by the original number
831 - 502 = 329
329 ÷ 502 = 0.6553784860557769
0.6553784860557769 x 100 = 65.54%