-18.32% is the change from 273 to 223
Calculation steps:
[( 223 - 273 ) ÷ 273] x 100 = -18.32%
Formula
Percentage change = [(223 - 273) / 273] x 100
Subtract the new number by the original number
223 - 273 = -50
-50 ÷ 273 = -0.18315018315018314
-0.18315018315018314 x 100 = -18.32%