59.65% is the change from 57 to 91
Calculation steps:
[( 91 - 57 ) ÷ 57] x 100 = 59.65%
Formula
Percentage change = [(91 - 57) / 57] x 100
Subtract the new number by the original number
91 - 57 = 34
34 ÷ 57 = 0.5964912280701754
0.5964912280701754 x 100 = 59.65%