-81.8% is the change from 978 to 178
Calculation steps:
[( 178 - 978 ) ÷ 978] x 100 = -81.8%
Formula
Percentage change = [(178 - 978) / 978] x 100
Subtract the new number by the original number
178 - 978 = -800
-800 ÷ 978 = -0.8179959100204499
-0.8179959100204499 x 100 = -81.8%