67.93% is the change from 502 to 843
Calculation steps:
[( 843 - 502 ) ÷ 502] x 100 = 67.93%
Formula
Percentage change = [(843 - 502) / 502] x 100
Subtract the new number by the original number
843 - 502 = 341
341 ÷ 502 = 0.6792828685258964
0.6792828685258964 x 100 = 67.93%