-68.16% is the change from 804 to 256
Calculation steps:
[( 256 - 804 ) ÷ 804] x 100 = -68.16%
Formula
Percentage change = [(256 - 804) / 804] x 100
Subtract the new number by the original number
256 - 804 = -548
-548 ÷ 804 = -0.681592039800995
-0.681592039800995 x 100 = -68.16%