Compute running totals from the largest amount down and assign a class; for example, split products into the top-contributing A class and the rest.
Rank rows by amount and mark the highest-contributing set as A, B, or C. Upload an Excel workbook to compute.
Upload an Excel workbook to compute. Full export is still a trial placeholder. You can also use one SKU master plus several sales workbooks, matched on an exact SKU.
Download the template pack for a filled sample workbook and a header-only blank workbook. Map the required columns, compute in the browser, then export a result sheet. No signup.