-65.88% is the change from 800 to 273
Calculation steps:
[( 273 - 800 ) ÷ 800] x 100 = -65.88%
Formula
Percentage change = [(273 - 800) / 800] x 100
Subtract the new number by the original number
273 - 800 = -527
-527 ÷ 800 = -0.65875
-0.65875 x 100 = -65.88%