How many percent of chance is there that we are passed but online it shows fail?

Out of 100, only 5% chances are there. It is very rarely. Hence, it is advised that you wait for the results i.e. marklists which will be out in your college in 2-3 days. Don’t jump into any conclusion. If you have worked really hard and you deserve good grades, then apply for revaluation and give re-exams. Use this failure as an opportunity to excel in a better way and never be disheartened about marks/grades.