-99.25% is the change from 800 to 6
Calculation steps:
[( 6 - 800 ) ÷ 800] x 100 = -99.25%
Formula
Percentage change = [(6 - 800) / 800] x 100
Subtract the new number by the original number
6 - 800 = -794
-794 ÷ 800 = -0.9925
-0.9925 x 100 = -99.25%
Example