-82% is the change from 800 to 144
Calculation steps:
[( 144 - 800 ) ÷ 800] x 100 = -82%
Formula
Percentage change = [(144 - 800) / 800] x 100
Subtract the new number by the original number
144 - 800 = -656
-656 ÷ 800 = -0.82
-0.82 x 100 = -82%
Example