-16.26% is the change from 978 to 819
Calculation steps:
[( 819 - 978 ) ÷ 978] x 100 = -16.26%
Formula
Percentage change = [(819 - 978) / 978] x 100
Subtract the new number by the original number
819 - 978 = -159
-159 ÷ 978 = -0.16257668711656442
-0.16257668711656442 x 100 = -16.26%