-98.68% is the change from 684 to 9
Calculation steps:
[( 9 - 684 ) ÷ 684] x 100 = -98.68%
Formula
Percentage change = [(9 - 684) / 684] x 100
Subtract the new number by the original number
9 - 684 = -675
-675 ÷ 684 = -0.9868421052631579
-0.9868421052631579 x 100 = -98.68%