Hi Hayat

Every year in NEET examination a cutoff is set on the basis on minimum percentile score criteria depending on which students applying for NEET are declared qualified or unqualified. Answering your question it's a yes ,yes there will be percentile system in NEET. Minimum percentile varies as per the category you belong to as for unreserved it is 50th percentile ,for PwD it is 45th percentile and for unreserved it is 40th percentile .

Hope this helps 

Good luck for your exams