Report to show no. of days in all Transition status for the stories done in last 15 days

I’m new to EazyBI and have a requirement to create a report to show issue details and no. of days it was in each Transition status for the issues whose transition status changed to Done in Last 15 days.
User would like to see the transition status starting from Physical design doing to Done for these projects.
For example, if the story was in Deploy QA- Doing for 30 days and changed to Deploy QA- Done and was there was for 10 days , user wants to see all the details for these stories.