65.45% is the change from 55 to 91
Calculation steps:
[( 91 - 55 ) ÷ 55] x 100 = 65.45%
Formula
Percentage change = [(91 - 55) / 55] x 100
Subtract the new number by the original number
91 - 55 = 36
36 ÷ 55 = 0.6545454545454545
0.6545454545454545 x 100 = 65.45%