-81.9% is the change from 978 to 177
Calculation steps:
[( 177 - 978 ) ÷ 978] x 100 = -81.9%
Formula
Percentage change = [(177 - 978) / 978] x 100
Subtract the new number by the original number
177 - 978 = -801
-801 ÷ 978 = -0.8190184049079755
-0.8190184049079755 x 100 = -81.9%