-31.19% is the change from 978 to 673
Calculation steps:
[( 673 - 978 ) ÷ 978] x 100 = -31.19%
Formula
Percentage change = [(673 - 978) / 978] x 100
Subtract the new number by the original number
673 - 978 = -305
-305 ÷ 978 = -0.3118609406952965
-0.3118609406952965 x 100 = -31.19%