Graph Data on for the current month

Hi All,

I am trying to create a "dynamic" graph which will allow me to change the information shown based on what month it currently is.
So if cell A2 changes from August to February, the graph will automatically update and show the February breakdown instead of the August breakdown.

I have attached an example of what I am using, and 2 graph to show what I am after.

Ta muchly for any help provided.