-83.74% is the change from 972 to 158
Calculation steps:
[( 158 - 972 ) ÷ 972] x 100 = -83.74%
Formula
Percentage change = [(158 - 972) / 972] x 100
Subtract the new number by the original number
158 - 972 = -814
-814 ÷ 972 = -0.8374485596707819
-0.8374485596707819 x 100 = -83.74%