It seems that if you look at the column on the right of the page, you can see upvotes and downvotes separately for recent posts. The same [n, m] format is displayed for recent comments, but it doesn't seem to actually sync with the score displaying on the comment. This feature only seems available on the sidebar: looking at the actual comment or post doesn't give you this information.
Thanks, whoever did this!
I'm sitting at 87% positive karma, and looking at recent comments and posts, apparently that's actually pretty low!
Almost all the users I looked at had at least that much positive; I saw one or two out of a dozen with less.
I'm a little surprised but I'm not sure how surprised I should actually be, since I already knew that we have a great community that keeps people around who post good things.