-15.5% is the change from 800 to 676
Calculation steps:
[( 676 - 800 ) ÷ 800] x 100 = -15.5%
Formula
Percentage change = [(676 - 800) / 800] x 100
Subtract the new number by the original number
676 - 800 = -124
-124 ÷ 800 = -0.155
-0.155 x 100 = -15.5%