The Sales Rank report can be found in Reporting> Sales Rank> Create New Sales Rank Report
You will need to enter an email address that will be notified when the report has been generated. You will need to enter a date range and then select the filter results by option you would like. You will then enter a number (it must be greater than 0). Then select modify report.
The status bar will show pending until the report is generated and available for view. The View Report will appear and allow you to select the link. The report will display.
The results display has also been updated and allows you to sort by the category and select the sort for increasing or decreasing values by using the arrows in the header. You have a smaller list displayed but can move from page to page or first or last page in report.