How to use qWanAck.xls

[hawkin]

I read the thread about "Calculating the required bandwidth for ACK queues for asymetric link".
I downloaded the excel sheet and put in my numbers (16161/1212).
But I still didn't understand completely how to fill it all out:

-I have an PPPoE connection and I have read one should calculate a 13% overhead for this (so should the sheet have 87% of the numbers I have, or should it be the ADSL connection speed?)
-I have set up a 50% for P2P (instead of 80% that is set up in the sheet)

I want to caculate the % numbers I need to put in for the different queues. Where do I find them in the sheet?