-96.63% is the change from 800 to 27
Calculation steps:
[( 27 - 800 ) ÷ 800] x 100 = -96.63%
Formula
Percentage change = [(27 - 800) / 800] x 100
Subtract the new number by the original number
27 - 800 = -773
-773 ÷ 800 = -0.96625
-0.96625 x 100 = -96.63%