Need help figuring out where to even begin to find the percentages from the raw score.

Directions: Use the data in the table below to answers the questions in this assessment. Below are the grades of eight students on their last Quantitative Reasoning Test. There was a total of 58 points on the test. Student Raw Score Percentage Letter Grade Adam 45 Sam 38 William 41 Jessica 43 Tammy 54 Denise 20 Matthew 56 Amanda 49