-10.02% is the change from 978 to 880
Calculation steps:
[( 880 - 978 ) ÷ 978] x 100 = -10.02%
Formula
Percentage change = [(880 - 978) / 978] x 100
Subtract the new number by the original number
880 - 978 = -98
-98 ÷ 978 = -0.10020449897750511
-0.10020449897750511 x 100 = -10.02%