We are doing a bit of coordinated house cleaning over at Cognitive Science in order to get our %Answered metric up to greener pastures. Since we have a few thousand questions and a daily stream of new questions, it can be hard to get a feel for how we are doing on a day to day basis, however. The %Answer metric is reported as a rounded full percentage, so it just doesn't really convey precise enough information for us to tell.
SE is ultimately built up around community-based behavioral reinforcements and punishments, and I think decimals for %Answered would make it easier for older Beta site communities with many questions to track their progress.
Could the %Answered metric on Beta sites and Area 51 be changed to show one or two decimals?