-3% is the change from 800 to 776
Calculation steps:
[( 776 - 800 ) ÷ 800] x 100 = -3%
Formula
Percentage change = [(776 - 800) / 800] x 100
Subtract the new number by the original number
776 - 800 = -24
-24 ÷ 800 = -0.03
-0.03 x 100 = -3%
Example