18.32% is the change from 273 to 323
Calculation steps:
[( 323 - 273 ) ÷ 273] x 100 = 18.32%
Formula
Percentage change = [(323 - 273) / 273] x 100
Subtract the new number by the original number
323 - 273 = 50
50 ÷ 273 = 0.18315018315018314
0.18315018315018314 x 100 = 18.32%