What percentage of your study in PMP works in real situation?

100%

Depend in the project, I have now a big project all activities are applied.

Well it depends on the job. If you are working in Project Office then100% and if some other company who has very little knowlege or where they have no project office then very little.

All of what you learned while preparing for the PMP should be suited and applied for any kind of project; small, medium, or large/enterprise level.