1885.71% is the change from 21 to 417
Calculation steps:
[( 417 - 21 ) ÷ 21] x 100 = 1885.71%
Formula
Percentage change = [(417 - 21) / 21] x 100
Subtract the new number by the original number
417 - 21 = 396
396 ÷ 21 = 18.857142857142858
18.857142857142858 x 100 = 1885.71%