It'd be great for customers to be able to search for products on sale by percentage amount, for instance, 25% off, 75% off, etc. I already have about 350 categories, so creating additional sale categories and manually figuring the amounts is not feasible.

For store owners that cannot simply specify discounts for large numbers of products because they have varying profit markup percentages per product, this is a much-needed improvement.

I've struggled with calculating the percentages for each product, and it is an EXTREMELY laborious task! I love the existing feature that shows the savings for each product, but a much-needed option is to provide an automated percentage amount that can be grouped, organized, and searched on.

An example:
http://superoutletmall.com/ProductCart/pc/viewPrd.asp?idcategory=263&idproduct=340" target=_blank onmouseout="javascript sav_callxml=''; hidetip;" onmouseover="javascript document.getPrd.idproduct.value='340'; sav_callxml='1'; return runXML1'prd_340'; - Boyds Auntie Alice Plush Bear  
Price $6.99
List Price: $24.99
You Save: $18.00   72% OFF!

THANK YOU FOR CONSIDERING THIS IMPORTANT OPTION!