34/80 = 42.5%
A value like 34/80, or 42.5%, can show up when 34 out of 80 people choose a certain option in a survey. It could also describe the share of students who pass a quiz, customers who use a coupon, or items that meet a quality check.
You can picture 42.5% as a little less than half of a group. In a group of 80, imagine splitting it into two equal parts of 40; 34 is six fewer than half, so the amount is about 43% and just below 50%.
A common mistake is to treat 42.5% as if it were 42.5 out of 100 whole objects in every situation. Percentages describe a proportion, so the actual number represented depends on the total group size.