Correlation between Number of NBME Mistakes and Final Score

We all know that, there is no way to calculate USMLE Exams score or NBME scores as we dont know the weight of each question or percentage of people who solved it correctly but we can predict it generally after answering multiple exams and analyzing results of friends too.

This is my correlation between percentage of mistakes or number of mistakes and NBME score.

Waiting your opinions.

73% = Failed
74% = 194 -52 Mistakes in NBME
75% = 198 -50 Mistakes in NBME
76% = 202 -48 Mistakes in NBME
77% = 206 -46 Mistakes in NBME
78% = 210 -44 Mistakes in NBME
79% = 214 -42 Mistakes in NBME
80% = 218 -40 Mistakes in NBME
81% = 222 -38 Mistakes in NBME
82% = 226 -36 Mistakes in NBME
83% = 230 -34 Mistakes in NBME
84% = 234 -32 Mistakes in NBME
85% = 238 -30 Mistakes in NBME
86% = 242 -28 Mistakes in NBME
87% = 246 -26 Mistakes in NBME
88% = 250 -24 Mistakes in NBME
89% = 254 -22 Mistakes in NBME
90% = 258 -20 Mistakes in NBME
91% = 262 -18 Mistakes in NBME