Hi Praveen,
                    As per IBPS educational qualification, it 60% in graduation for general category. If you get 59.99, it will treated as less than 60%. So that's the main criteria.
The percent marks will be calculated by dividing the total marks that the student has obtained in all the semesters / years by the aggregate maximum marks (in all the subjects, irrespective of honours/ optional/ additional optional subject if any) and then multiplied by 100.
This will be applicable for those Universities also where Class / Grade is decided on basis of Honours marks only.
In cases where CGPA / OGPA is awarded by the institute, the same should be converted into percentage and mentioned in the online application.

For any other details information, you can check the link below : IBPS PO eligibility criteria

Hii Praveen. There is not any specifically mentioned percentage that you need in graduation to appear in IBPS. You just need to hold a graduation degree while you are registering online. If you get your percentage in CGPA then you need to convert it into percentage with two digits after decimal. Hope this helps. Good luck!!