Percentage question

[topjobs]

I can't figure this one out. I have an invoicing system where I want to be able to show, if possible on the same page, a report that shows total sales for last year, divided by months, this year's sales, divided by months, and the percentage difference between these 2 years and the percentage difference between each months. In case my English is not good enough, need a summary field showing on the first column last year and the total sales for last year. Under that, I want to see each month of the year with total sales for each the months. Next columns is the same, except it will represent the current year. Next to the year field I need to see the total sale for that year, and the percentage difference between last year and this year. Next to this year's months, I would like to see the total sales for each month, and a field with percent value, showing the difference between this year and last.

Thank you very much for your help.

[Mike D.]

Duplicate post. You were answered in your other post.