39.19% is the change from 222 to 309
Calculation steps:
[( 309 - 222 ) ÷ 222] x 100 = 39.19%
Formula
Percentage change = [(309 - 222) / 222] x 100
Subtract the new number by the original number
309 - 222 = 87
87 ÷ 222 = 0.3918918918918919
0.3918918918918919 x 100 = 39.19%