-97.51% is the change from 684 to 17
Calculation steps:
[( 17 - 684 ) ÷ 684] x 100 = -97.51%
Formula
Percentage change = [(17 - 684) / 684] x 100
Subtract the new number by the original number
17 - 684 = -667
-667 ÷ 684 = -0.9751461988304093
-0.9751461988304093 x 100 = -97.51%