My question is when we calculate percentile and it comes out to be equal to some data point in the data, then we include that particular data point or not? or we select values greater than that?

Definition of Percentile as shown in the video:

The

percentile of a sample is a value such that`p`

percentage of the values in the data are less than or`p`

equal tothis value.

Example:

If you take the 100th percentile, it will definitely be the last element in the sorted data set.

So, 100th Percentile will certainly include the last element.