-0.2% is the change from 996 to 994
Calculation steps:
[( 994 - 996 ) ÷ 996] x 100 = -0.2%
Formula
Percentage change = [(994 - 996) / 996] x 100
Subtract the new number by the original number
994 - 996 = -2
-2 ÷ 996 = -0.002008032128514056
-0.002008032128514056 x 100 = -0.2%