Note that the total level measure can be any aggregations, such as total, average and calculation, as all measures are inherited from raw measures. Actually, such a report is very easy to design. Please download report specification for review in detail.
Create a basic crosstab with structure below
Highlight region and then click auto summary, aggregate function is applied
Drag summary from bottom to top
Highlight Revenue, Cross Profit and % Margin and copy them under Summary
Change summary as text “All regions” and format % and currency. Run it to generate report as above.