2.21% is the change from 226 to 231
Calculation steps:
[( 231 - 226 ) ÷ 226] x 100 = 2.21%
Formula
Percentage change = [(231 - 226) / 226] x 100
Subtract the new number by the original number
231 - 226 = 5
5 ÷ 226 = 0.022123893805309734
0.022123893805309734 x 100 = 2.21%