2242.86% is the change from 21 to 492
Calculation steps:
[( 492 - 21 ) ÷ 21] x 100 = 2242.86%
Formula
Percentage change = [(492 - 21) / 21] x 100
Subtract the new number by the original number
492 - 21 = 471
471 ÷ 21 = 22.428571428571427
22.428571428571427 x 100 = 2242.86%