-8.63% is the change from 800 to 731
Calculation steps:
[( 731 - 800 ) ÷ 800] x 100 = -8.63%
Formula
Percentage change = [(731 - 800) / 800] x 100
Subtract the new number by the original number
731 - 800 = -69
-69 ÷ 800 = -0.08625
-0.08625 x 100 = -8.63%