-82.31% is the change from 978 to 173
Calculation steps:
[( 173 - 978 ) ÷ 978] x 100 = -82.31%
Formula
Percentage change = [(173 - 978) / 978] x 100
Subtract the new number by the original number
173 - 978 = -805
-805 ÷ 978 = -0.8231083844580777
-0.8231083844580777 x 100 = -82.31%