Yup, in sciences anyway (including econ), to get your percentage: Grades 1-5: multiply your grade by 8 (so a 5=40%, 4=32% etc, not that it matters much) Grades 6-16: going up from 40%, each increase in your mark by 2.5% corresponds to an increase in your grade by 1 (so a 7 is 45%, a 9 is 50%, a 15 i...