Percentile Determination, given: mean, median, standard deviation

Hello all,

I have a question about determining percentile on a test. I am given mean (77%), median (78%), and standard deviation (8). I scored a 74%, and there were 102 test takers. If possible, could you explain to me how to calculate my rank on the test or percentile?

Thanks so much!

There is not enough information.
The percentile is the percentage of people who scored lower than a certain score.

All that can be said is that the percentile is no more than 50%, since the median 78% is higher than 74%.