percent complete ("pc")
When a task is first created, its percent complete is zero. When the task is updated with values for actual duration, remaining duration, or actual work (which affects actual duration), Microsoft Project calculates percent complete as:Percent Complete = (Actual Duration / Duration) * 100If a value is entered in the % Complete field, Microsoft Project automatically calculates actual duration and remaining duration, based around the a task's currently scheduled duration. Microsoft Project will also copy a task's scheduled start into actual start and scheduled finish to actual finish if the task is marked as 100% complete.
SOURCE; microsoft project glossary-projectlearning.net
An estimate, expressed as a percent, of the amount of work which has been completed on an activity or group of activities. A ratio comparison of the completion status to the current projection of total work.
One measure of completion used to determine the remaining duration of a partially completed activity.