1785.71% is the change from 21 to 396
Calculation steps:
[( 396 - 21 ) ÷ 21] x 100 = 1785.71%
Formula
Percentage change = [(396 - 21) / 21] x 100
Subtract the new number by the original number
396 - 21 = 375
375 ÷ 21 = 17.857142857142858
17.857142857142858 x 100 = 1785.71%