There are many Private colleges which can offer you admission based on this percentile

You can calculate your rank by the following formula

(100-Percentile score)*869010/100, Therefore your rank is 225942

If the number of student get increased to 1200000 then the rank would be

(100-Percentile rank)*1200000/100 ,which is 312000

You can use this rank to predict the possible colleges, You can use the college predictor the link is given below