Dear Reader, 

As per your current qualification you were eligible for CAT and they allow only those people who will be eligible for colleges participating in counselling.  It's okay if you failed in one subject.  CAT allowed you to appear so you are also eligible for colleges. 

Talking about FMS Delhi.  It's last year cut off was starting from 98 percentile and as your score is 99% so clearly you are eligible for that.  

Kindly visit the link mentioned below for more details. 

https://bschool.careers360.com/articles/fms-delhi-admission-criteria