Hey Deepak
The difficulty depends upon the student, how he/she deals with it. A science student has a authority to change his stream but for that he/she needs to put extra efforts. A lot of engineers purse MBA after graduation where they face similar problem.
It would be totally new concepts and topics in BBA for a Science student, but if you work a little more hard and cope up with your batch mates and try to understand the curriculum then the program won't be tough for you, but it you pile up things and concepts to study then it would definitely create a trouble for you.
For further doubts, ask us. All the best.
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