The percentile released by NTA and not DU. So nothing is official right now.

Your percentile score will tell you how less your marks are in comparison of the highest score scored by a candidate. For example 100 percentile does not mean they have scored full marks. Its means that their score is the highest out of all the candidates and their rank in No. 1. Similar candidates with 99.99 percentile will have rank 2.

But here are you may see there are many students with similar percentiles. But that will not matter because their Best of Fours maybe different. And even of that is same then whoever was born first will be given the higher rank. All these conditions were specified by DU itself in their Bulletin.

So now wait for the official DU rankings

All the Best