4.09% is the change from 220 to 229
Calculation steps:
[( 229 - 220 ) ÷ 220] x 100 = 4.09%
Formula
Percentage change = [(229 - 220) / 220] x 100
Subtract the new number by the original number
229 - 220 = 9
9 ÷ 220 = 0.04090909090909091
0.04090909090909091 x 100 = 4.09%