1890.48% is the change from 21 to 418
Calculation steps:
[( 418 - 21 ) ÷ 21] x 100 = 1890.48%
Formula
Percentage change = [(418 - 21) / 21] x 100
Subtract the new number by the original number
418 - 21 = 397
397 ÷ 21 = 18.904761904761905
18.904761904761905 x 100 = 1890.48%