-40.63% is the change from 800 to 475
Calculation steps:
[( 475 - 800 ) ÷ 800] x 100 = -40.63%
Formula
Percentage change = [(475 - 800) / 800] x 100
Subtract the new number by the original number
475 - 800 = -325
-325 ÷ 800 = -0.40625
-0.40625 x 100 = -40.63%