-11.04% is the change from 978 to 870
Calculation steps:
[( 870 - 978 ) ÷ 978] x 100 = -11.04%
Formula
Percentage change = [(870 - 978) / 978] x 100
Subtract the new number by the original number
870 - 978 = -108
-108 ÷ 978 = -0.11042944785276074
-0.11042944785276074 x 100 = -11.04%