Reflecting zero percent in the overdue rate for percentages that are actually, say, just under 1% gives the reviewer of this data a false impression that all requirements have been met. By showing an accurate percent, the leader overseeing completions can ensure those users go back in to fully complete the course.
This feature rounds up overdue percentages to minimize a false 0%.
With this feature update, only overdue percentages are rounding up. All other values (such as completion rate) are unaffected and will continue to round down.