Yes, you can apply for the IBPS Clerk Exam even if you have completed your graduation with a percentage below the cutoff. The Institute of Banking Personnel Selection (IBPS) conducts the IBPS Clerk Exam to recruit candidates for clerical positions in various public sector banks in India. The eligibility criteria for the exam are as follows:

1. Educational Qualification:
- Candidates must have a bachelor's degree in any discipline from a recognized university or its equivalent.
- There is no minimum percentage requirement specified by IBPS for the clerk exam. Therefore, candidates with any percentage, including those below the cutoff, are eligible to apply.

2. Age Limit:
- The minimum age limit for applicants is 20 years, and the maximum age limit is 28 years.
- There are age relaxations for candidates belonging to reserved categories, such as SC/ST, OBC, PWD, etc.

3. Nationality:
- Candidates must be citizens of India or subjects of Nepal/Bhutan.
- Tibetan refugees who came to India before January 1, 1962, with the intention of permanently settling in India, are also eligible.
- Indian origin people who have migrated from Pakistan, Burma, Sri Lanka, East African countries of Kenya, Uganda, the United Republic of Tanzania, Zambia, Malawi, Zaire, Ethiopia, and Vietnam with the intention of permanently settling in India are also eligible.

4. Computer Proficiency:
- Candidates should have a basic knowledge of computers and must possess a valid operating and working knowledge of computer systems.
- They should have a Certificate/Diploma/Degree in computer operations/language or should have studied Computer/Information Technology as one of the subjects in high school/college.

Therefore, as long as you meet the above eligibility criteria, including having a bachelor's degree, you can apply for the IBPS Clerk Exam irrespective of your graduation percentage. However, it is important to note that the final selection for the clerk position is based on the candidate's performance in the written examination and the subsequent interview process. So, it is advisable to prepare well and perform to the best of your abilities in order to increase your chances of selection.