-40.29% is the change from 978 to 584
Calculation steps:
[( 584 - 978 ) ÷ 978] x 100 = -40.29%
Formula
Percentage change = [(584 - 978) / 978] x 100
Subtract the new number by the original number
584 - 978 = -394
-394 ÷ 978 = -0.40286298568507156
-0.40286298568507156 x 100 = -40.29%