Would be useful to know because it gives you an idea if cards are too easy or too difficult and if you need to change the scheduler settings.
To clarify, do you mean the global statistics page or a Rem’s metadata page?
I mean the global statistics page. I want to know my “true retention” overall just like with this anki add on
Didn‘t know these numbers existed already in the anki settings but you could also add the stat shown above. I really only care about the percentage of correct cards to have an idea of my overall performance.