-10.22% is the change from 978 to 878
Calculation steps:
[( 878 - 978 ) ÷ 978] x 100 = -10.22%
Formula
Percentage change = [(878 - 978) / 978] x 100
Subtract the new number by the original number
878 - 978 = -100
-100 ÷ 978 = -0.10224948875255624
-0.10224948875255624 x 100 = -10.22%