-11.2% is the change from 723 to 642
Calculation steps:
[( 642 - 723 ) ÷ 723] x 100 = -11.2%
Formula
Percentage change = [(642 - 723) / 723] x 100
Subtract the new number by the original number
642 - 723 = -81
-81 ÷ 723 = -0.11203319502074689
-0.11203319502074689 x 100 = -11.2%