-85.69% is the change from 685 to 98
Calculation steps:
[( 98 - 685 ) ÷ 685] x 100 = -85.69%
Formula
Percentage change = [(98 - 685) / 685] x 100
Subtract the new number by the original number
98 - 685 = -587
-587 ÷ 685 = -0.8569343065693431
-0.8569343065693431 x 100 = -85.69%