Pivot Table - Calculate Variance - Hidden Fields?

I need some help adding a target value field inside a pivot table in excel.

Here is what my current pivot table looks like.

       
Regions                  1 year - Actual              1 year - Target??                Difference
                   (April 2013 to MArch 2014)                                           (Target - Actual)?     

Region1                $6,355,696.75
Region2                $6,775,309.87
Region3                $2,230,424.76

Regions expand into managers which in turn expand to consultants.

What I want to do is add a column for target values of the 3 different regions and then create another calculated field that will show the difference between the target and actual values.

Can this be done without writing any stored procedures in SQL? I want to do this in excel itself.

The target values are not calculated so can we store them in hidden fields or something in the pivot or excel?