68.52% is the change from 54 to 91
Calculation steps:
[( 91 - 54 ) ÷ 54] x 100 = 68.52%
Formula
Percentage change = [(91 - 54) / 54] x 100
Subtract the new number by the original number
91 - 54 = 37
37 ÷ 54 = 0.6851851851851852
0.6851851851851852 x 100 = 68.52%