14.56% is the change from 309 to 354
Calculation steps:
[( 354 - 309 ) ÷ 309] x 100 = 14.56%
Formula
Percentage change = [(354 - 309) / 309] x 100
Subtract the new number by the original number
354 - 309 = 45
45 ÷ 309 = 0.14563106796116504
0.14563106796116504 x 100 = 14.56%