hello,

It is expected that IMI Delhi CAT 2018 cut offs may remain more or less same for PGDM 2019-21 batch as under IMI New Delhi, “The CAT cut off for shortlisting is  88-90 percentile for  PGDM  and  85-88 percentile for PGD-HRM and PGDM (Banking & Financial services) is 85-88

Since you got 81 percentile you can check your eligibility in other colleges 

Hope this helps you!

All the best!