-7.81% is the change from 717 to 661
Calculation steps:
[( 661 - 717 ) ÷ 717] x 100 = -7.81%
Formula
Percentage change = [(661 - 717) / 717] x 100
Subtract the new number by the original number
661 - 717 = -56
-56 ÷ 717 = -0.07810320781032078
-0.07810320781032078 x 100 = -7.81%