2290.48% is the change from 21 to 502
Calculation steps:
[( 502 - 21 ) ÷ 21] x 100 = 2290.48%
Formula
Percentage change = [(502 - 21) / 21] x 100
Subtract the new number by the original number
502 - 21 = 481
481 ÷ 21 = 22.904761904761905
22.904761904761905 x 100 = 2290.48%