Predicting the percentile for any marks range will be pretty difficult. It can vary to a large extent but below I have mentioned the colleges in which you can apply and have a high probability of getting a call and admission with your score of 171 in NMAT by GMAC.

• SRM University, Chennai
• IBS business school, Hyderabad
• BML Munjal University, Gurgaon
• Ansal University, Gurgaon
• School of Business, University of Petroleum
• Woxsen School of Business, Hyderabad
• LM Thapar school of management, Thapar University
• Hyderabad Business school, GITAM University
• JK Lamkhsmipat university, Jaipur

All the best!!