-46.63% is the change from 800 to 427
Calculation steps:
[( 427 - 800 ) ÷ 800] x 100 = -46.63%
Formula
Percentage change = [(427 - 800) / 800] x 100
Subtract the new number by the original number
427 - 800 = -373
-373 ÷ 800 = -0.46625
-0.46625 x 100 = -46.63%