-16.36% is the change from 978 to 818
Calculation steps:
[( 818 - 978 ) ÷ 978] x 100 = -16.36%
Formula
Percentage change = [(818 - 978) / 978] x 100
Subtract the new number by the original number
818 - 978 = -160
-160 ÷ 978 = -0.16359918200409
-0.16359918200409 x 100 = -16.36%