-81.96% is the change from 959 to 173
Calculation steps:
[( 173 - 959 ) ÷ 959] x 100 = -81.96%
Formula
Percentage change = [(173 - 959) / 959] x 100
Subtract the new number by the original number
173 - 959 = -786
-786 ÷ 959 = -0.8196037539103233
-0.8196037539103233 x 100 = -81.96%