"Downloading ... Size: 14 MB Status: Complete"
"File: Size: 14MB Downloaded: [Insert Date and Time]"
If you could provide more context or specify what kind of text you're looking for (e.g., a status message, a description for a download page, an error message, etc.), I'd be more than happy to help you craft the exact text you need.
Or, if you're looking for something that might appear on a webpage or in a download manager:
