27.98% is the change from 243 to 311
Calculation steps:
[( 311 - 243 ) ÷ 243] x 100 = 27.98%
Formula
Percentage change = [(311 - 243) / 243] x 100
Subtract the new number by the original number
311 - 243 = 68
68 ÷ 243 = 0.27983539094650206
0.27983539094650206 x 100 = 27.98%