-1.1% is the change from 728 to 720
Calculation steps:
[( 720 - 728 ) ÷ 728] x 100 = -1.1%
Formula
Percentage change = [(720 - 728) / 728] x 100
Subtract the new number by the original number
720 - 728 = -8
-8 ÷ 728 = -0.01098901098901099
-0.01098901098901099 x 100 = -1.1%