-99.71% is the change from 684 to 2
Calculation steps:
[( 2 - 684 ) ÷ 684] x 100 = -99.71%
Formula
Percentage change = [(2 - 684) / 684] x 100
Subtract the new number by the original number
2 - 684 = -682
-682 ÷ 684 = -0.9970760233918129
-0.9970760233918129 x 100 = -99.71%