According to the recent trends, the NMIMS Mumbai NMAT cutoff is 208 (94%). Your score is on the boundary and thus serves as no guarantee for admission. The cutoff usually depends on the level of difficulty of the exam and ranges from 207–210. In addition, if you are a fresher or have work experience of fewer than 12 months, your chances for conversion are zero. But if you do have good work experience, the chances are still rare.
All I can suggest to you is that you go for a retest and improve in the section you have flunked. Re-trying NMAT might get you a better score and thus increase your chances to an extent.