You can interpret it any way you want. The Book of Revelations makes it quite clear that there will be an end to the world, and that a large number of people are going to die in the process (and most of that in the prelude to the Rapture).
I believe 1/3rd would be left, if my memory of Revelations serves me correctly, that's still not the same as wiping everybody out, except for Noah's family. And Camping is basically predicting that everybody who isn't "saved" will be wiped out.
which revelations?