71.7% is the change from 53 to 91
Calculation steps:
[( 91 - 53 ) ÷ 53] x 100 = 71.7%
Formula
Percentage change = [(91 - 53) / 53] x 100
Subtract the new number by the original number
91 - 53 = 38
38 ÷ 53 = 0.7169811320754716
0.7169811320754716 x 100 = 71.7%