3933.33% is the change from 21 to 847
Calculation steps:
[( 847 - 21 ) ÷ 21] x 100 = 3933.33%
Formula
Percentage change = [(847 - 21) / 21] x 100
Subtract the new number by the original number
847 - 21 = 826
826 ÷ 21 = 39.333333333333336
39.333333333333336 x 100 = 3933.33%