392.16% is the change from 102 to 502
Calculation steps:
[( 502 - 102 ) ÷ 102] x 100 = 392.16%
Formula
Percentage change = [(502 - 102) / 102] x 100
Subtract the new number by the original number
502 - 102 = 400
400 ÷ 102 = 3.9215686274509802
3.9215686274509802 x 100 = 392.16%