The remaining 27.79 of them didn't so they don't count.
Assuming that the 27.79% would be in agreement with which ever way the vote went, the result was an overwhelming vote to leave. I know it doesn't work like this but its a thought!
Watching the EU press conference this morning I got an overwhelming impression that from what was said the 'EU' have absolutely no intention of getting a 'good deal' on either side in fact the person doing the talking actually said that it was a damage limitation excercise on their part on behalf of the remaining 27 members and that they weren't in agreement with the 500+ page document he was waving about. Regardless of what happens in our Parliament the final outcome is totally in the hands of the 27 EU member states.