-39.25% is the change from 800 to 486
Calculation steps:
[( 486 - 800 ) ÷ 800] x 100 = -39.25%
Formula
Percentage change = [(486 - 800) / 800] x 100
Subtract the new number by the original number
486 - 800 = -314
-314 ÷ 800 = -0.3925
-0.3925 x 100 = -39.25%