2061.9% is the change from 21 to 454
Calculation steps:
[( 454 - 21 ) ÷ 21] x 100 = 2061.9%
Formula
Percentage change = [(454 - 21) / 21] x 100
Subtract the new number by the original number
454 - 21 = 433
433 ÷ 21 = 20.61904761904762
20.61904761904762 x 100 = 2061.9%