-8.7% is the change from 724 to 661
Calculation steps:
[( 661 - 724 ) ÷ 724] x 100 = -8.7%
Formula
Percentage change = [(661 - 724) / 724] x 100
Subtract the new number by the original number
661 - 724 = -63
-63 ÷ 724 = -0.08701657458563536
-0.08701657458563536 x 100 = -8.7%