-9.72% is the change from 720 to 650
Calculation steps:
[( 650 - 720 ) ÷ 720] x 100 = -9.72%
Formula
Percentage change = [(650 - 720) / 720] x 100
Subtract the new number by the original number
650 - 720 = -70
-70 ÷ 720 = -0.09722222222222222
-0.09722222222222222 x 100 = -9.72%