Excel spreadsheet generates the percent and points based on the number of problems wrong OR based on the number of problems correct. Example: If a students has three problems wrong out of ten on an assignment that is worth 50 points, then the spreadsheet will display the percent (.70) and the points out of 50 (35 out of 50).
The spreadsheet can generate a "limitless" number of combinations based on the number of total points and number of problems.