-0.8% is the change from 1000 to 992
Calculation steps:
[( 992 - 1000 ) ÷ 1000] x 100 = -0.8%
Formula
Percentage change = [(992 - 1000) / 1000] x 100
Subtract the new number by the original number
992 - 1000 = -8
-8 ÷ 1000 = -0.008
-0.008 x 100 = -0.8%