How do I find out how many people have a score above a certain value?
Percentiles give the percentage of people who have a score below a threshold score.
Percentile (score) = 100$$\frac{n \leq score}{N}$$
1 - Percentile (score) = 100$$\frac{n \gt score}{N}$$
The percentiles for each score are routinely outputted using the frequency procedure in SPSS.
FREQUENCIES VAR=SCORE. EXE.