-16.97% is the change from 978 to 812
Calculation steps:
[( 812 - 978 ) ÷ 978] x 100 = -16.97%
Formula
Percentage change = [(812 - 978) / 978] x 100
Subtract the new number by the original number
812 - 978 = -166
-166 ÷ 978 = -0.16973415132924335
-0.16973415132924335 x 100 = -16.97%