-99.28% is the change from 839 to 6
Calculation steps:
[( 6 - 839 ) ÷ 839] x 100 = -99.28%
Formula
Percentage change = [(6 - 839) / 839] x 100
Subtract the new number by the original number
6 - 839 = -833
-833 ÷ 839 = -0.9928486293206198
-0.9928486293206198 x 100 = -99.28%