31/46 as a percentage is 67.39%. This value tells you how much of a whole the fraction represents when it is expressed in hundredths. The percentage is already rounded to two decimal places for easy reading.
The fraction 31/46 shows that out of 46 equal parts, 31 are being considered. When you look at it as a part of a whole, it is a little more than two‑thirds, which matches the 67‑plus percent you see.
Because percentages are often used in reports and everyday life, rounding to two decimal places makes the number clear without being overly precise. So whenever you need a quick estimate, you can safely use 67.39% for 31/46.