-70.35% is the change from 978 to 290
Calculation steps:
[( 290 - 978 ) ÷ 978] x 100 = -70.35%
Formula
Percentage change = [(290 - 978) / 978] x 100
Subtract the new number by the original number
290 - 978 = -688
-688 ÷ 978 = -0.7034764826175869
-0.7034764826175869 x 100 = -70.35%