-68.81% is the change from 978 to 305
Calculation steps:
[( 305 - 978 ) ÷ 978] x 100 = -68.81%
Formula
Percentage change = [(305 - 978) / 978] x 100
Subtract the new number by the original number
305 - 978 = -673
-673 ÷ 978 = -0.6881390593047034
-0.6881390593047034 x 100 = -68.81%