-88.64% is the change from 273 to 31
Calculation steps:
[( 31 - 273 ) ÷ 273] x 100 = -88.64%
Formula
Percentage change = [(31 - 273) / 273] x 100
Subtract the new number by the original number
31 - 273 = -242
-242 ÷ 273 = -0.8864468864468864
-0.8864468864468864 x 100 = -88.64%