What is the name that is selected in Layout Setup | Show Records From? for this layout?
Could you upload another screen shot of your layout, but this time in layout mode?
Is this what you wanted?
Yep. That shows the problem.
Note the :: preceding the field names for the two summary fields. This tells me that you have added these fields from a different table occurrence than "Sales"--the Tutorial: What are Table Occurrences? selected in Layout Setup | Show Records from for this layout.
What you have set up requires that the summary fields to be from the same table occurrence as the layout or they are reporting a total based on the context of a relationship between tables instead of the sorted found set of records in your layout. I can't tell from here if this means that your layout needs to be based on a different table occurrence or if you simply need to re-specify these summary fields to be from "Sales", but one change or the other will be needed before your subtotals will appear correctly on this layout.
Yes that solves the problem, I changed the table occurence, and its sorted it out. Thanks!