Percent complete is a relationship between services performed to the date and overall performance of an activity. It represents a progress of an activity or other element of the project structure plan and is the percentage completion. The percent complete may be based on cost, time expended or other efforts, and uses milestone trend analysis.
There are two types of the present complete: the relative and absolute one. The first type describes subjective assessment of the work package about the performed services in this work package. But this assessment is not so important because of its subjectivity. The absolute percent complete type describes not the work scope but the work package that has been completed. The absolute percent complete is therefore calculated from the sum of the time efforts of the completed work packages in relation to the time effort of the whole work packages. This method makes only then sense, if the project is subdivided into several work packages.