IIIT Delhi has become a popular choice of JEE aspirants. Here is some information regarding B.Tech ECE cutoff for outside Delhi candidates-
97 percentile is equivalent to rank 30,000. During 2023, B.Tech ECE cutoff for IIIT Delhi stood at rank 8670. This was the JEE Mains cutoff rank for general category OS candidates. Unfortunately, it is not possible to get into ECE at IIITD with a 97 percentile.
Nonetheless, you should consider other good engineering colleges.