931.25% is the change from 64 to 660
Calculation steps:
[( 660 - 64 ) ÷ 64] x 100 = 931.25%
Formula
Percentage change = [(660 - 64) / 64] x 100
Subtract the new number by the original number
660 - 64 = 596
596 ÷ 64 = 9.3125
9.3125 x 100 = 931.25%
Example