-14.72% is the change from 978 to 834
Calculation steps:
[( 834 - 978 ) ÷ 978] x 100 = -14.72%
Formula
Percentage change = [(834 - 978) / 978] x 100
Subtract the new number by the original number
834 - 978 = -144
-144 ÷ 978 = -0.147239263803681
-0.147239263803681 x 100 = -14.72%