81.87% is the change from 502 to 913
Calculation steps:
[( 913 - 502 ) ÷ 502] x 100 = 81.87%
Formula
Percentage change = [(913 - 502) / 502] x 100
Subtract the new number by the original number
913 - 502 = 411
411 ÷ 502 = 0.8187250996015937
0.8187250996015937 x 100 = 81.87%