-87.6% is the change from 726 to 90
Calculation steps:
[( 90 - 726 ) ÷ 726] x 100 = -87.6%
Formula
Percentage change = [(90 - 726) / 726] x 100
Subtract the new number by the original number
90 - 726 = -636
-636 ÷ 726 = -0.8760330578512396
-0.8760330578512396 x 100 = -87.6%