45/49 as a percentage is 91.84%. This means the fraction is just a little less than a whole number, or 100 %.
The fraction 45/49 can also be thought of as 45 parts out of a total of 49 equal parts. Because the numerator is close to the denominator, the value is high, which is reflected in the percentage being in the low 90s.
When you see a number like 91.84%, it tells you that for every 100 units, about 92 of them would be represented by the original fraction. This makes it easy to compare the fraction to other percentages or to whole numbers in everyday situations.