81.25% is the change from 64 to 116
Calculation steps:
[( 116 - 64 ) ÷ 64] x 100 = 81.25%
Formula
Percentage change = [(116 - 64) / 64] x 100
Subtract the new number by the original number
116 - 64 = 52
52 ÷ 64 = 0.8125
0.8125 x 100 = 81.25%
Example