Hello as aspirant.
As per your question i do understand your state of mind.
Your percentage is not that pow as you may think.
Most of the courses and colleges, government require you to clear a particular entrance exam.
You can get admission based on or off your merit list in private colleges.
Admission process is simple if you are going for a particular course like mrdical then you must clear NEET exam.
For B.Sc. there are exams required to clear.
All the best.