In LD college (ahmedabad) the admission is through ACPC(an admission committee in Gujarat) which make  merit list of percentile on the basis of JEE main marks and board marks combined. But if you are a CBSE student, get ready to get low percentile score. So it just the percentage doesn't matter, you have to score good in JEE main as well.

http://gtu-info.com/College/LD/LD-Engineering-College-Ahmedabad-LDCE/Last-Year-Closing-Merit-No-Cutoff
Follow the link for details.

Based on 12th science result and jee/gujcet exam you get rank over Gujarat all students. Based  on which you get admission in any college situated in Gujrat via ACPC.
To get previous year cutoff get below link.. http://gtu-info.com/College/LD/LD-Engineering-College-Ahmedabad-LDCE/Last-Year-Closing-Merit-No-Cutoff

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