-56.34% is the change from 978 to 427
Calculation steps:
[( 427 - 978 ) ÷ 978] x 100 = -56.34%
Formula
Percentage change = [(427 - 978) / 978] x 100
Subtract the new number by the original number
427 - 978 = -551
-551 ÷ 978 = -0.5633946830265849
-0.5633946830265849 x 100 = -56.34%