Of the 1584 applicants, the exact percentage who receive an interview isn’t revealed, but is estimated to be around 80% for most courses – this being the percentage that Cambridge thinks have a realistic chance of success having looked at predicted grades and BMAT score.
One can also look at the BMAT scores of applicants – the mean score looking at both sections 1 and 2 for those given an offer from their chosen college was 11.4, versus 11.07 for those pooled and given an offer, 10.67 for those rejected having been pooled, and 9.74 for those rejected immediately.