How is the Project Percentage Complete figure calculated?

The Project Percentage Complete figure displays on the Project Snapshot.This is derived by :

  1. Calculating the total Planned Effort of all tasks in the project, then
  2. Calculating the total Percent Complete for all tasks (entered by users as they update their tasks).
  3. Multiplying the total Planned Effort by total Percent Complete to give the Completed Effort.
  4. The Completed Effort result is then divided by the total Planned Effort and multiplied by 100.

For example:

Task Planned Effort Percentage Complete Completed Effort
Task A 80 hours 90% 72 hours
Task B 20 hours 90% 18 hours
Task C 40 hours 50% 20 hours
Task D 20 hours 40% 8 hours
Totals 160 hours - 118 hours

Therefore 118 hours / 160 hours x 100 = 73.75% Project Percent Complete

Note: Changes to a task percentage complete will be reflected immediately on the Project Snapshot.

Milestones

Milestones affect the percent complete total as follows, if the project has:

  • no tasks and at least one incomplete milestone then the project percent complete = 0%
  • no tasks and only complete milestones then the project percent complete = 100%
  • tasks that are all 100% complete but there is at least one incomplete milestone then the project percent complete = 99%