-1% is the change from 800 to 792
Calculation steps:
[( 792 - 800 ) ÷ 800] x 100 = -1%
Formula
Percentage change = [(792 - 800) / 800] x 100
Subtract the new number by the original number
792 - 800 = -8
-8 ÷ 800 = -0.01
-0.01 x 100 = -1%
Example