For percentile prediction, you can hop on to this link: https://www.bfactory.in/blog/cat-2019-paper-analysis/
This paper has been uploaded on CAT official website www.iimcat.ac.in in the student login section and can be viewed by those who took CAT 19.
Slot 1 paper with answer key:
Slot 2 paper with answer key:
Wish you all the best!