What is sitemap.xml / undefined as a percentage? It comes out to NaN% when rounded to two decimal places.
The fraction “sitemap.xml/undefined” doesn’t represent a real numeric value, so the percentage you get is not a number. In everyday terms, you can think of it as “not applicable” rather than a specific figure.
Even though it looks like a math problem, the result is simply NaN%—a placeholder that tells you the calculation can’t be completed. This is common when the denominator is missing or undefined.
If you ever see this in a report, just remember it means the data isn’t usable for a percentage conversion, not that there’s an actual 0 % or 100 % value hidden there.
