-96.06% is the change from 686 to 27
Calculation steps:
[( 27 - 686 ) ÷ 686] x 100 = -96.06%
Formula
Percentage change = [(27 - 686) / 686] x 100
Subtract the new number by the original number
27 - 686 = -659
-659 ÷ 686 = -0.9606413994169096
-0.9606413994169096 x 100 = -96.06%