-7.06% is the change from 978 to 909
Calculation steps:
[( 909 - 978 ) ÷ 978] x 100 = -7.06%
Formula
Percentage change = [(909 - 978) / 978] x 100
Subtract the new number by the original number
909 - 978 = -69
-69 ÷ 978 = -0.0705521472392638
-0.0705521472392638 x 100 = -7.06%