-87.55% is the change from 723 to 90
Calculation steps:
[( 90 - 723 ) ÷ 723] x 100 = -87.55%
Formula
Percentage change = [(90 - 723) / 723] x 100
Subtract the new number by the original number
90 - 723 = -633
-633 ÷ 723 = -0.8755186721991701
-0.8755186721991701 x 100 = -87.55%