-87.75% is the change from 800 to 98
Calculation steps:
[( 98 - 800 ) ÷ 800] x 100 = -87.75%
Formula
Percentage change = [(98 - 800) / 800] x 100
Subtract the new number by the original number
98 - 800 = -702
-702 ÷ 800 = -0.8775
-0.8775 x 100 = -87.75%