-40.49% is the change from 978 to 582
Calculation steps:
[( 582 - 978 ) ÷ 978] x 100 = -40.49%
Formula
Percentage change = [(582 - 978) / 978] x 100
Subtract the new number by the original number
582 - 978 = -396
-396 ÷ 978 = -0.4049079754601227
-0.4049079754601227 x 100 = -40.49%