29.72% is the change from 249 to 323
Calculation steps:
[( 323 - 249 ) ÷ 249] x 100 = 29.72%
Formula
Percentage change = [(323 - 249) / 249] x 100
Subtract the new number by the original number
323 - 249 = 74
74 ÷ 249 = 0.2971887550200803
0.2971887550200803 x 100 = 29.72%