-60.12% is the change from 800 to 319
Calculation steps:
[( 319 - 800 ) ÷ 800] x 100 = -60.12%
Formula
Percentage change = [(319 - 800) / 800] x 100
Subtract the new number by the original number
319 - 800 = -481
-481 ÷ 800 = -0.60125
-0.60125 x 100 = -60.12%