-0.6% is the change from 1000 to 994
Calculation steps:
[( 994 - 1000 ) ÷ 1000] x 100 = -0.6%
Formula
Percentage change = [(994 - 1000) / 1000] x 100
Subtract the new number by the original number
994 - 1000 = -6
-6 ÷ 1000 = -0.006
-0.006 x 100 = -0.6%