Overview

In a project, there are two different percent complete calculations - % Complete and Percent Complete (Duration). Each is a select-able column in the Filters of the Task List and also on project and task reports. The difference between the two is easy to understand.

So, what's the difference?

The % Complete (% Comp is the column name) is the normal % complete you're used to seeing. It is based on completed (or accomplished) hours and the total work hours. The calculation is the Task/Project completed hours divided by the total work hours.  

Percent Complete (Duration) will calculate the Task/ Project completed duration divided by the total duration. 

Ok, do you have an example?

For sure, here's a really simple example using a project with two tasks:

• Task 1: Duration is 8 Days, has 2 Work Hours and is 100% complete
• Task 2: Duration is 2 Days, has 8 Work Hours and is 0% complete

In total, we have two tasks with a total duration of 10 days & 10 total work hours

Calcs at the project level (it's the same calc at the task level):

• % Comp is 2 Work Hours Completed / 10 Total Work Hours = the project is 20% complete
   
• Percent Complete (Duration) is 8 Duration Days Completed / 10 Total Duration Days = the project's duration is 80% complete

Here's how it looks in PI...