129.69% is the change from 64 to 147
Calculation steps:
[( 147 - 64 ) ÷ 64] x 100 = 129.69%
Formula
Percentage change = [(147 - 64) / 64] x 100
Subtract the new number by the original number
147 - 64 = 83
83 ÷ 64 = 1.296875
1.296875 x 100 = 129.69%
Example