100% displays as 1% after form is saved and re-opened

I have a numeric field with a display and edit pattern of zero{}|num.percent{}. It works exactly as I'd like, with one important exception. If the user enters 100, the form correctly displays it as 100%. However, after the form is saved, closed and re-opened, the value in that field is displayed as 1%. This only happens with 100% (i.e., if the user enters 25, it shows as 25% even after the form is closed and re-opened). Any idea how I can get the 100% to display correctly after saving? I've exhausted all options.