27.57% is the change from 243 to 310
Calculation steps:
[( 310 - 243 ) ÷ 243] x 100 = 27.57%
Formula
Percentage change = [(310 - 243) / 243] x 100
Subtract the new number by the original number
310 - 243 = 67
67 ÷ 243 = 0.2757201646090535
0.2757201646090535 x 100 = 27.57%