I feel bad for you kids today... writing part? that sucks.
Usually you can find what the average for the test you took was and compare it to that.
Depending on the year (if you took one fall and one spring) the level of difficulty is different.
Like one year the test may be harder and the average math could be 620 and another it could be 680.
I took it once and for the year I took it was in the top 86% same score the year before and I would have been in the top 79%.
So check what percentile you were in, cause colleges do see that as well.