-19.63% is the change from 978 to 786
Calculation steps:
[( 786 - 978 ) ÷ 978] x 100 = -19.63%
Formula
Percentage change = [(786 - 978) / 978] x 100
Subtract the new number by the original number
786 - 978 = -192
-192 ÷ 978 = -0.19631901840490798
-0.19631901840490798 x 100 = -19.63%