67.13% is the change from 502 to 839
Calculation steps:
[( 839 - 502 ) ÷ 502] x 100 = 67.13%
Formula
Percentage change = [(839 - 502) / 502] x 100
Subtract the new number by the original number
839 - 502 = 337
337 ÷ 502 = 0.6713147410358565
0.6713147410358565 x 100 = 67.13%