Your method failed because you didn't make it an unstored calculation field. But you do not need to use a field at all.
Use the Insert Menu to insert a "symbol". Select the "other symbol" option and pick either "FoundCount" to show the number of records in your current found count or "TotalRecordCount" to show the total records in your table.
Too easy. I wasn't aware of the "other symbols". Thanks again Phil!