-16.56% is the change from 978 to 816
Calculation steps:
[( 816 - 978 ) ÷ 978] x 100 = -16.56%
Formula
Percentage change = [(816 - 978) / 978] x 100
Subtract the new number by the original number
816 - 978 = -162
-162 ÷ 978 = -0.1656441717791411
-0.1656441717791411 x 100 = -16.56%