> For the complete documentation index, see [llms.txt](https://docs.hivel.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hivel.ai/faqs/metrics-and-data-faqs/why-do-i-see-na-in-the-percentage-change-of-a-metric.md).

# Why do I see "NA" in the percentage change of a metric?

The **"NA"** is displayed when there is no data or values for the previous period of a given metric.

<figure><img src="https://3057781534-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F5KAIOUWph0JLSgQqbzyT%2Fuploads%2FWNPBQlvsVqlsT8Q0GutO%2Fimage.png?alt=media&amp;token=8a4ce0b6-72b7-43e2-be3d-c20f64288a60" alt="" width="375"><figcaption></figcaption></figure>

* **Why some metrics have data while others do not**:
  * It’s possible for certain metrics to show values while others don’t, depending on activity during the period.
    * For example:
      * **Cycle Time** might display as `6d` because tickets moved through the workflow.
      * **MTTR** (Mean Time to Recovery) could show `0`, as no hotfixes were pushed to release branches during that time.
* **Rationale for Showing "NA"**:
  * Instead of inaccurately reflecting a percentage change (e.g., showing an increase of `+100%`), **"NA"** provides a clearer indicator that the metric lacked data for the previous period.
  * This approach gives users a more accurate understanding of their metrics and avoids misleading interpretations.