Salesforce Certification results now shows “% scores” for each of the sections in the exam along with “Pass/Fail” result.
The sections provided in your results directly relate to the sections listed in the exam outline of the study guide.
If you receive 90% for a specific section, that means you answered 90% of the questions correctly that were related to that section on the exam.
You can also access your section-level scores in your Webassessor account by viewing the details of the exam result in your completed exam history.
Note: This feedback is only available for exams completed after January 13, 2017.
References
http://certification.force.com/pkb/articles/Public_KB/Section-Level-Feedback