-80.1% is the change from 794 to 158
Calculation steps:
[( 158 - 794 ) ÷ 794] x 100 = -80.1%
Formula
Percentage change = [(158 - 794) / 794] x 100
Subtract the new number by the original number
158 - 794 = -636
-636 ÷ 794 = -0.801007556675063
-0.801007556675063 x 100 = -80.1%