38.57% is the change from 223 to 309
Calculation steps:
[( 309 - 223 ) ÷ 223] x 100 = 38.57%
Formula
Percentage change = [(309 - 223) / 223] x 100
Subtract the new number by the original number
309 - 223 = 86
86 ÷ 223 = 0.38565022421524664
0.38565022421524664 x 100 = 38.57%