With a 90.44 percentile in JEE Main, your chances of getting into Computer Science Engineering (CSE) at Amrita University depend on the campus:

Coimbatore Campus: The cutoff for CSE is usually around 95.5 percentile, so admission may be challenging but still possible.

Amritapuri Campus: The cutoff here tends to be around 96.5 percentile, making it less likely for you to get a seat.

Bengaluru Campus: The cutoff for CSE is generally around 94 percentile, so your chances are higher here.