-99.4% is the change from 1000 to 6
Calculation steps:
[( 6 - 1000 ) ÷ 1000] x 100 = -99.4%
Formula
Percentage change = [(6 - 1000) / 1000] x 100
Subtract the new number by the original number
6 - 1000 = -994
-994 ÷ 1000 = -0.994
-0.994 x 100 = -99.4%