Formula in a narrative view

Question

Hi Gurus,
Can you please help me with narrative views in OBIEE (11.1.1.5)?
I have a table that lists customer sales., e.g.
Customer Sales($mn) Rank
Cust1 800 1
Cust2 450 2
Cust3 350 3
Cust4 300 4
Cust5 40 5
Cust6 30 6
Cust7 20 7
Cust8 10 8
Total 2000
The requirement is to build a narrative view that uses different columns and totals. In this case, the narrative view should say:
Top *3* customers provide *80%* of the revenue.
(n = 3)
(80% = sum(sales) where rank in top n / total sales) = (800+450+350)/2000*100
I can't find a way to incorporate formulas. I can call the sales column (@2) but not able to put the calculation in the narrative view. Has anyone done such a thing before or knows how to do it?
Thank you!!

Answer 1

Thank you, HM... that worked great!!
I have another quick follow up - is there a way to refer to individual values in the result set in a narrative? For example, based on the same table:
Customer $mn Rank
Cust1 800 1
Cust2 450 2
Cust3 350 3
Cust4 300 4
Cust5 40 5
Cust6 30 6
Cust7 20 7
Cust8 10 8
Total 2000
I want to create another narrative that is the ratio of sales of the first and third ranked customer; i.e., the narrative I am trying to build is:
No. 3 has to increase sales by *2.28* times to equal No. 1.
(2.28 = 800/350)
Is that possible, given that my table is sorted by rank?