-87.57% is the change from 724 to 90
Calculation steps:
[( 90 - 724 ) ÷ 724] x 100 = -87.57%
Formula
Percentage change = [(90 - 724) / 724] x 100
Subtract the new number by the original number
90 - 724 = -634
-634 ÷ 724 = -0.8756906077348067
-0.8756906077348067 x 100 = -87.57%