Hi,

According to nmatorg. The definition od scores and percentiles are

Scaled scores - All the test forms are equated to account for any differences in overall difficulty and the raw test scores are placed on a common scale. This is done to ensure scores are comparable across test forms such that the scores are not impacted by different test takers getting different test forms.

Percentile scores - The percentile rank or score shows how a test taker scored when compared to all other test takers who took the exam (e.g. all test takers who took the NMAT by GMAC™ exam). For example, if a test taker is said to be at the 75th percentile, the test taker scored better than 75% of the test takers who took the NMAT by GMAC™ exam.

The Nmat focuses more on the score than the percentile. however your percentile will be calculated on the basis of number of student given the exam in this year and score secured by you.

Hope you find it helpful.