-16.77% is the change from 978 to 814
Calculation steps:
[( 814 - 978 ) ÷ 978] x 100 = -16.77%
Formula
Percentage change = [(814 - 978) / 978] x 100
Subtract the new number by the original number
814 - 978 = -164
-164 ÷ 978 = -0.16768916155419222
-0.16768916155419222 x 100 = -16.77%