How to calculate the percentiles in statistics?

Question

I have these series of numbers and I am wondering each one is how much percentile and also how to calculate a custom percentile such as 60^th percentile? 

[1, 3, 5, 7, 9, 9, 14]

Answer 1

This document explained how to calculate the percentile of each element and also calculating the custom percentile. 

"Percentiles are very handy for exploring the distribution of number sets using various EDA graphs, including the well-known (and still underused) boxplot. The meaning of percentile can be captured by stating that the p^th percentile of a distribution is a number such that approximately p percent (p%) of the values in the distribution are equal to or less than that number. So, if ‘28’ is the 80^th percentile of a larger batch of numbers, 80% of those numbers are less than or equal to 28."

Answer 2

60 percentile

=7*(60/100)=4.2

=4.2 round up to 5

so 5th digit in the series of number is your 60th Percentile

hence answer is 9 .