Issue with Measure Changing Dynamically in a Matrix

[Anonymous]

I have an issue with using a Measure dynamically in different tables. I haven't set it up correctly. Can someone please help correct?

There are 4 Tables - Key, Amounts, Base, DateDimension:

I need to do a calculation where I take Amount / (Base *(1/12)) for each Unique ID. 

When I display the data in a Matrix with all possible Names included, it gives the correct result:

Calc =
     Var _Amount = sum(Amounts[Amounts])
     Return
     Divide (_Amount,[Var_Base]*(1/12),0)

Var _Base = Average(Base[Base])

However, if I decide I only want to display it so that only values with amounts are included, it dynamically reduces the Base and thus changes the Total Calc from 18.32 -> 18.37.

How can I either (a) hold the total base constant or (b) have the Total Calc add up the Rows rather than calculating dynamically?

[Greg_Deckler · Accepted solution]

@Anonymous This looks like a measure totals problem. Very common. See my post about it here: https://community.powerbi.com/t5/DAX-Commands-and-Tips/Dealing-with-Measure-Totals/td-p/63376

Also, this Quick Measure, Measure Totals, The Final Word should get you what you need:
https://community.powerbi.com/t5/Quick-Measures-Gallery/Measure-Totals-The-Final-Word/m-p/547907

[Anonymous]

Thanks @Greg_Deckler!

Result in case it helps anyone:

Calc2 =
    IF(

         HasOneFilter(Table[Name]),

          Var _Amount = sum(Amounts[Amounts])
          Var _Base = Average(Base[Base])
          Return
          Divide (_Amount,(_Base*(1/12)),0),
           

           Sumx(Table2[Calc])
           )