The 'Progress Line' option has been added to Primavera P6 Project Management since version 7.0.
The Progress Line provides a quick visual indication to show if an activity is running ahead or behind schedule.
The Performance % Complete field in P6 is utilized for Earned Value (EV) calculation and provides the percentage of the planned work that is currently completed. It serves as the initial field to assess the progress of an activity or project.
In Primavera P6, the Performance Percent Complete calculation technique is defined at the WBS level.