A family of Microsoft relational database management systems designed for ease of use.
Pardon me for bumping in - but you cannot have % work complete in any manner if you do not enter in "days of task." You can certainly calculate duration if you assign resources and work, but without some values - project cannot calculate % complete nor % work complete.
You may be best with Excel and calculating your values for each Task. You cannot calculate different values for each task (row) in Project.