Where is % of estimated work done for epics stored in JIRA?

Question

We're in the middle of integrating JIRA with Asana. One field that I would be especially interested in transferring is the % of estimated work done (x of y story points) for epics. It's the progress bar that shows for each epic in the Backlog view, and if you hover over that bar you can see the exact percentage. I'm trying to attach a screenshot, but I don't think I can.

This percentage is calculated as completed story points done out of total story points for an epic, which is a good measure of progress.

My question is, in which field is this percentage stored? Where in JIRA can we find it? The idea is that, once we find it, we can map it to Asana and display epic progress that way.

Alina_hr7eqp · Answer

This is helpful, thank you! OK, so this needs a lot more digging around than I originally thought.

Nic Brough -Adaptavist- · Answer

It might be stored in the index, sort of (some calculated fields are, but it's a bit more complex than just a record in there), but you can't read the index directly.  Your connection code is going to need to read the issue in full and possibly re-calculate it.

Alina_hr7eqp · Answer

Thank you, Nic!

Even if it is a display, there has to be a calculation happening somewhere that generates that percentage. Is it possible that the calculation happens on-the-fly every single time, and the result is never stored anywhere? This seems highly ineffective. That percentage is an important progress tracking measure, and I would like to include it in the progress reports I send out (as well as map it to Asana to display it on the roadmap...)