Change the rule of counting comment rate

I just have a need to change the rule of counting comment rate,but I do not know the location of defining the rule.
Now I use Sonarqube Enterprise 6.7.5 (build 38563)
Thanks a lot

Hey there.

It looks like you’re looking at the Measures tab – which just offers raw numbers. What are you trying to change (is it raising issues, breaking your Quality Gate)?

v6.7 LTS is also a very old version of SonarQube at this point. You should target an upgrade to at least v7.9 LTS.