13/21 as a percentage is 61.90%. This number tells you how much of a whole the fraction represents when you look at it in terms of hundredths. It’s a handy way to compare the fraction to other values that are also expressed as percentages.
The fraction 13/21 is a bit more than half, but not as large as three‑quarters. When you see it written as a percentage, it’s easier to understand its size at a glance, especially in everyday situations like sales or statistics.
Because the percentage is rounded to two decimal places, you get a clean, readable figure that works well in reports, presentations, or simple calculations. Using 61.90% lets you quickly see the proportion without dealing with the original fraction.