5.49% is the change from 273 to 288
Calculation steps:
[( 288 - 273 ) ÷ 273] x 100 = 5.49%
Formula
Percentage change = [(288 - 273) / 273] x 100
Subtract the new number by the original number
288 - 273 = 15
15 ÷ 273 = 0.054945054945054944
0.054945054945054944 x 100 = 5.49%