-40.59% is the change from 978 to 581
Calculation steps:
[( 581 - 978 ) ÷ 978] x 100 = -40.59%
Formula
Percentage change = [(581 - 978) / 978] x 100
Subtract the new number by the original number
581 - 978 = -397
-397 ÷ 978 = -0.4059304703476483
-0.4059304703476483 x 100 = -40.59%