-99.27% is the change from 273 to 2
Calculation steps:
[( 2 - 273 ) ÷ 273] x 100 = -99.27%
Formula
Percentage change = [(2 - 273) / 273] x 100
Subtract the new number by the original number
2 - 273 = -271
-271 ÷ 273 = -0.9926739926739927
-0.9926739926739927 x 100 = -99.27%