8.61% is the change from 209 to 227
Calculation steps:
[( 227 - 209 ) ÷ 209] x 100 = 8.61%
Formula
Percentage change = [(227 - 209) / 209] x 100
Subtract the new number by the original number
227 - 209 = 18
18 ÷ 209 = 0.0861244019138756
0.0861244019138756 x 100 = 8.61%