39.01% is the change from 223 to 310
Calculation steps:
[( 310 - 223 ) ÷ 223] x 100 = 39.01%
Formula
Percentage change = [(310 - 223) / 223] x 100
Subtract the new number by the original number
310 - 223 = 87
87 ÷ 223 = 0.3901345291479821
0.3901345291479821 x 100 = 39.01%