402% is the change from 100 to 502
Calculation steps:
[( 502 - 100 ) ÷ 100] x 100 = 402%
Formula
Percentage change = [(502 - 100) / 100] x 100
Subtract the new number by the original number
502 - 100 = 402
402 ÷ 100 = 4.02
4.02 x 100 = 402%
Example