-64.25% is the change from 800 to 286
Calculation steps:
[( 286 - 800 ) ÷ 800] x 100 = -64.25%
Formula
Percentage change = [(286 - 800) / 800] x 100
Subtract the new number by the original number
286 - 800 = -514
-514 ÷ 800 = -0.6425
-0.6425 x 100 = -64.25%