-99.27% is the change from 819 to 6
Calculation steps:
[( 6 - 819 ) ÷ 819] x 100 = -99.27%
Formula
Percentage change = [(6 - 819) / 819] x 100
Subtract the new number by the original number
6 - 819 = -813
-813 ÷ 819 = -0.9926739926739927
-0.9926739926739927 x 100 = -99.27%