-70.65% is the change from 978 to 287
Calculation steps:
[( 287 - 978 ) ÷ 978] x 100 = -70.65%
Formula
Percentage change = [(287 - 978) / 978] x 100
Subtract the new number by the original number
287 - 978 = -691
-691 ÷ 978 = -0.7065439672801636
-0.7065439672801636 x 100 = -70.65%