-9% is the change from 978 to 890
Calculation steps:
[( 890 - 978 ) ÷ 978] x 100 = -9%
Formula
Percentage change = [(890 - 978) / 978] x 100
Subtract the new number by the original number
890 - 978 = -88
-88 ÷ 978 = -0.08997955010224949
-0.08997955010224949 x 100 = -9%