I think they aren't showing the percentages the last few shows? When was the last time we saw them? Can't remember. I was thinking they didn't want to show how far in front someone was, not how close it was at the bottom.
After someone has been evicted and then identifying who is who with the percentages, they say they don't want to do that now for whatever reason (even though they did that in previous series) but I don't think it matters that much how far ahead the person with most votes is when they're not putting names to them.