-85.71% is the change from 686 to 98
Calculation steps:
[( 98 - 686 ) ÷ 686] x 100 = -85.71%
Formula
Percentage change = [(98 - 686) / 686] x 100
Subtract the new number by the original number
98 - 686 = -588
-588 ÷ 686 = -0.8571428571428571
-0.8571428571428571 x 100 = -85.71%