-37.12% is the change from 978 to 615
Calculation steps:
[( 615 - 978 ) ÷ 978] x 100 = -37.12%
Formula
Percentage change = [(615 - 978) / 978] x 100
Subtract the new number by the original number
615 - 978 = -363
-363 ÷ 978 = -0.37116564417177916
-0.37116564417177916 x 100 = -37.12%