-5.5% is the change from 800 to 756
Calculation steps:
[( 756 - 800 ) ÷ 800] x 100 = -5.5%
Formula
Percentage change = [(756 - 800) / 800] x 100
Subtract the new number by the original number
756 - 800 = -44
-44 ÷ 800 = -0.055
-0.055 x 100 = -5.5%
Example