Generally the report wizard can set this up for you but because you are using only a single field from your table, the report wizard does not offer you all the summary options that you'll need for this field.
Use the wizard to set up a simple report with just the Status field. Go into design view, and select Sorting & Grouping. Choose the Status field and choose Yes for Group Header, a new Status header will appear.
Drag the Status text box from the detail section into the new header and close up the detail section. In the report header (not page header) add a text box with a control source of =Count(*). This is for the overall total. Name this textbox txtTotal. If you don't want this figure to show up on the report, change the visible property to No.
In the Status header add 2 unbound text boxes. One with a control source of =Count(*) and name it txtSubTotal and another with a control source of:
=Int(([txtSubTotal] / [txtTotal]) * 100) & "%"
That should give you the results you're looking for.