I need to prepare a chart (in percentage) more like an Issue statistics report showing
1. Number of tasks completed in the sprint
2. Number of tasks carried forward to the new sprint
3. Number of tasks moved to backlog from the sprint.
Say suppose 50 user stories are worked on, 10 got moved to the backlog, 10 are carried forward for the new sprint and 30 stories are completed. How do I derive at a chart explaining this? Can someone help?