-30.06% is the change from 978 to 684
Calculation steps:
[( 684 - 978 ) ÷ 978] x 100 = -30.06%
Formula
Percentage change = [(684 - 978) / 978] x 100
Subtract the new number by the original number
684 - 978 = -294
-294 ÷ 978 = -0.3006134969325153
-0.3006134969325153 x 100 = -30.06%