2161.9% is the change from 21 to 475
Calculation steps:
[( 475 - 21 ) ÷ 21] x 100 = 2161.9%
Formula
Percentage change = [(475 - 21) / 21] x 100
Subtract the new number by the original number
475 - 21 = 454
454 ÷ 21 = 21.61904761904762
21.61904761904762 x 100 = 2161.9%