4357.14% is the change from 21 to 936
Calculation steps:
[( 936 - 21 ) ÷ 21] x 100 = 4357.14%
Formula
Percentage change = [(936 - 21) / 21] x 100
Subtract the new number by the original number
936 - 21 = 915
915 ÷ 21 = 43.57142857142857
43.57142857142857 x 100 = 4357.14%