171.43% is the change from 21 to 57
Calculation steps:
[( 57 - 21 ) ÷ 21] x 100 = 171.43%
Formula
Percentage change = [(57 - 21) / 21] x 100
Subtract the new number by the original number
57 - 21 = 36
36 ÷ 21 = 1.7142857142857142
1.7142857142857142 x 100 = 171.43%