-83.12% is the change from 936 to 158
Calculation steps:
[( 158 - 936 ) ÷ 936] x 100 = -83.12%
Formula
Percentage change = [(158 - 936) / 936] x 100
Subtract the new number by the original number
158 - 936 = -778
-778 ÷ 936 = -0.8311965811965812
-0.8311965811965812 x 100 = -83.12%