How to show %increase between two quizes

Hi!

I am building one course that will have a pre-assessment and post-assessment. 

  • The pre assessment will display first
  • Then the learner will review reference materials, videos, etc.
  • The post assessment will display, which will have the same questions as the pre assessment.

Instead of showing final score at the end, I want to be able to show the learner how much their knowledge has increased, in percentage.  For example

"After viewing the documents, you have increased your knowledge on this subject by 50%".

Is there an existing variable that can manage that?

Any information will be helpful!

Thank You,

Adrienne Brown

 

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