-91.41% is the change from 978 to 84
Calculation steps:
[( 84 - 978 ) ÷ 978] x 100 = -91.41%
Formula
Percentage change = [(84 - 978) / 978] x 100
Subtract the new number by the original number
84 - 978 = -894
-894 ÷ 978 = -0.9141104294478528
-0.9141104294478528 x 100 = -91.41%