2142.86% is the change from 21 to 471
Calculation steps:
[( 471 - 21 ) ÷ 21] x 100 = 2142.86%
Formula
Percentage change = [(471 - 21) / 21] x 100
Subtract the new number by the original number
471 - 21 = 450
450 ÷ 21 = 21.428571428571427
21.428571428571427 x 100 = 2142.86%