-99.4% is the change from 996 to 6
Calculation steps:
[( 6 - 996 ) ÷ 996] x 100 = -99.4%
Formula
Percentage change = [(6 - 996) / 996] x 100
Subtract the new number by the original number
6 - 996 = -990
-990 ÷ 996 = -0.9939759036144579
-0.9939759036144579 x 100 = -99.4%