By default, task progress is calculated as "time spent" / ("time spent" + "remaining estimate"). This means a task becomes 100% complete if the remaining estimate is set to zero or is not defined. A task in status Done shows percent complete less than 100% if remaining time for the task is bigger than zero. Having remaining estimate on task means there is more work to it. We recommend having remaining estimate zero on completed tasks, as this may cause invalid calculation of remaining work in different reporting tools.
The default behavior can be overridden.
Use case #1. Your company doesn't set zero as remaining estimate on Done tasks, so Done tasks are shown with progress less than 100%.
Solution: add an override for status Done and set 100 as percent value. All tasks in status Done will have 100% regardless time spent.
Use case #2. Your company doesn't use Jira's time tracking feature to log the time spent, or you just want to base progress value on issue status.
Solution: add overrides for multiple statuses, setting different progress value for each of them. For example, you could set "Not started" = 0, "In Progress" = 50, "Done" = 100, etc.
Please note that overridden task progress calculation doesn't apply to parent tasks. Parent tasks always have their progress calculated from children tasks.
To add an override, select a status and insert the required percentage. Then, click Save.
The defined by administrator overrides will appear by default in newly created charts. Although, each chart owner can modify or remove the overrides if needed.