I would suggest you that continue with 76% and concentrate on your interested career work hard in the degree which you choose because if you write improvement tests and get around same percentage you will loose your confidence and interest.

Hello Vishal.

76% is a good score. But, if you feel that you deserve more marks than this and want to work harder than you did previously, then surely take the improvement exams as a second chance and attend them.

All the best.