rcentage earned;If you choose this option, the FINAL EXAM SUBSTITUTE score WILL be used to calculate your final grade. You CANNOT substitute your original scores if you use this option!! NO EXCEPTIONS. Decimal point value is converted to a Percentage value, then a Letter Grade- see Bottom Line;90-100% = A; 80- 89% = B; 70- 79% = C; 60- 69% = D;0- 59% = F...