-6.85% is the change from 978 to 911
Calculation steps:
[( 911 - 978 ) ÷ 978] x 100 = -6.85%
Formula
Percentage change = [(911 - 978) / 978] x 100
Subtract the new number by the original number
911 - 978 = -67
-67 ÷ 978 = -0.06850715746421268
-0.06850715746421268 x 100 = -6.85%