-81.59% is the change from 858 to 158
Calculation steps:
[( 158 - 858 ) ÷ 858] x 100 = -81.59%
Formula
Percentage change = [(158 - 858) / 858] x 100
Subtract the new number by the original number
158 - 858 = -700
-700 ÷ 858 = -0.8158508158508159
-0.8158508158508159 x 100 = -81.59%