-7.88% is the change from 723 to 666
Calculation steps:
[( 666 - 723 ) ÷ 723] x 100 = -7.88%
Formula
Percentage change = [(666 - 723) / 723] x 100
Subtract the new number by the original number
666 - 723 = -57
-57 ÷ 723 = -0.07883817427385892
-0.07883817427385892 x 100 = -7.88%