-89.74% is the change from 273 to 28
Calculation steps:
[( 28 - 273 ) ÷ 273] x 100 = -89.74%
Formula
Percentage change = [(28 - 273) / 273] x 100
Subtract the new number by the original number
28 - 273 = -245
-245 ÷ 273 = -0.8974358974358975
-0.8974358974358975 x 100 = -89.74%