57.81% is the change from 64 to 101
Calculation steps:
[( 101 - 64 ) ÷ 64] x 100 = 57.81%
Formula
Percentage change = [(101 - 64) / 64] x 100
Subtract the new number by the original number
101 - 64 = 37
37 ÷ 64 = 0.578125
0.578125 x 100 = 57.81%
Example