Customizing table calculations

One of the first things that users want to do after creating a quick table calculation is to update the scope of the calculation, as the default choice was not necessarily what they had in mind.

Adapting a % Difference Calculation

Let's plot Profit by Year(Order Date) in rows and Quarter(Order Date) in columns, create a quick calculation for % Difference, and add Profit back into the view by double-clicking on the field in the Data pane (as the table calculation will take over the original Profit field, and it is not possible to add the same calculation twice):

Tableau's default choice was to compute this table calculation along Table (across) and relative to the Previous value, which...