Battery usage stats

I have sony xperia z5. After the marshmallow update my battery have drained sooo fast! My real problem is when I want to see the stats under the settings > battery usage I can`t see which program did this! There are only system apps like screen can't see whatsapp , my launcher etc. I try to reset to factory data and repair xperia device with sony bridge but no develop sadly. Is there anybody have situation?

I'm a new user and can't upload a screenshot.

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