how much percentage we need in 12th to get admission in lnct without cracking jee ?

Hi there,
I hope you are talking about Lakshmi Narain College of Technology .
As you must be talking about the admission in Bachelor of engineering there is 1200 seats for that
The college accept admissions through various entrance exams. There are also lateral courses available for eligible candidates who want to sit in the second year directly without any entry test.
Admission to the regular UG courses in the LNCT is accepted through two different entrance examinations as follows:

1. 75% of the seats are reserved under State Quota for the students from Madhya Pradesh. Admission to this quota is accepted through PET common entrance exam conducted by Professional Examination Board, Chhattisgarh (CGVYAPAM). Please visit the website regularly for more details.
2. 10% of the seats are reserved under All India Quota for candidates from all over India. Admissions to this quota is accepted through AIEEE conducted by CBSE, New Delhi.
3. The remaining 15% admission is reserved under Management Quota where a candidate is expected to qualify either in PET or AIEEE. Advertisement will be placed in Newspapers and website for admission under Management Quota after the declaration of results.
Hope you know how to get admission and the criteria for it.
Thank you.