Hello Aspirant! You can definitely get SRM University with this percentile of yours. Based on your JEE main percentile and 12th PCM percentage you will be admitted through management quota. Through management quota you will get the desired branch and campus so it's worth to pay extra capitation charges. Capitation charges varies according to time and availability of seats so if you are going through management quota then secure your seat as soon as possible otherwise you may have to pay more capitation amount.
You can also use this link to predict your college:
https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp