-20.35% is the change from 978 to 779
Calculation steps:
[( 779 - 978 ) ÷ 978] x 100 = -20.35%
Formula
Percentage change = [(779 - 978) / 978] x 100
Subtract the new number by the original number
779 - 978 = -199
-199 ÷ 978 = -0.2034764826175869
-0.2034764826175869 x 100 = -20.35%