-83.89% is the change from 981 to 158
Calculation steps:
[( 158 - 981 ) ÷ 981] x 100 = -83.89%
Formula
Percentage change = [(158 - 981) / 981] x 100
Subtract the new number by the original number
158 - 981 = -823
-823 ÷ 981 = -0.8389398572884812
-0.8389398572884812 x 100 = -83.89%