-49.25% is the change from 800 to 406
Calculation steps:
[( 406 - 800 ) ÷ 800] x 100 = -49.25%
Formula
Percentage change = [(406 - 800) / 800] x 100
Subtract the new number by the original number
406 - 800 = -394
-394 ÷ 800 = -0.4925
-0.4925 x 100 = -49.25%