11.72% is the change from 273 to 305
Calculation steps:
[( 305 - 273 ) ÷ 273] x 100 = 11.72%
Formula
Percentage change = [(305 - 273) / 273] x 100
Subtract the new number by the original number
305 - 273 = 32
32 ÷ 273 = 0.11721611721611722
0.11721611721611722 x 100 = 11.72%