I would create two seperate calculated fields, one for sales and one for budget. This will make things easier for future analysis.
We can create the following calculated field, [Sales Amount], for Sales.
If [Data Desc] = "Sales" then [Amount] End
This will return the Amount for the value "Sales" in Data Desc.
We can make another calculation for Budget:
If [Data Desc] = "Budget" then [Amount] End
Here is a relevant link on the topic.
Including Filters in Calculations Without Including them on the Filter Card
I hope that helps!
That's what I did , thanks