Create dashboard with current month metric and % change from prior month

[dstephens22]

Hi:  I have a report and I am trying to create a dashboard with current month metric and % change from prior month.  I was using the Key Value for a clean look but now I am using a Text box.  

The issue seems to be the calc .  I am trying to use the 'treat as' and display the number in the box.  Cabn't seem to get it to work.

Again I would want two metrics:  Current Month voulume and % Change from previous month.  I don't want a list table or cross tab.

The other issue is the filters at the top will also cause errors with the metric so I have to somehow disassociate them. 

Thanks for any help.

Dave