-7.95% is the change from 717 to 660
Calculation steps:
[( 660 - 717 ) ÷ 717] x 100 = -7.95%
Formula
Percentage change = [(660 - 717) / 717] x 100
Subtract the new number by the original number
660 - 717 = -57
-57 ÷ 717 = -0.0794979079497908
-0.0794979079497908 x 100 = -7.95%