-81.03% is the change from 833 to 158
Calculation steps:
[( 158 - 833 ) ÷ 833] x 100 = -81.03%
Formula
Percentage change = [(158 - 833) / 833] x 100
Subtract the new number by the original number
158 - 833 = -675
-675 ÷ 833 = -0.8103241296518607
-0.8103241296518607 x 100 = -81.03%