-19.33% is the change from 978 to 789
Calculation steps:
[( 789 - 978 ) ÷ 978] x 100 = -19.33%
Formula
Percentage change = [(789 - 978) / 978] x 100
Subtract the new number by the original number
789 - 978 = -189
-189 ÷ 978 = -0.19325153374233128
-0.19325153374233128 x 100 = -19.33%