-90.71% is the change from 936 to 87
Calculation steps:
[( 87 - 936 ) ÷ 936] x 100 = -90.71%
Formula
Percentage change = [(87 - 936) / 936] x 100
Subtract the new number by the original number
87 - 936 = -849
-849 ÷ 936 = -0.907051282051282
-0.907051282051282 x 100 = -90.71%