-16.46% is the change from 978 to 817
Calculation steps:
[( 817 - 978 ) ÷ 978] x 100 = -16.46%
Formula
Percentage change = [(817 - 978) / 978] x 100
Subtract the new number by the original number
817 - 978 = -161
-161 ÷ 978 = -0.16462167689161555
-0.16462167689161555 x 100 = -16.46%