37.22% is the change from 223 to 306
Calculation steps:
[( 306 - 223 ) ÷ 223] x 100 = 37.22%
Formula
Percentage change = [(306 - 223) / 223] x 100
Subtract the new number by the original number
306 - 223 = 83
83 ÷ 223 = 0.3721973094170404
0.3721973094170404 x 100 = 37.22%