21/97 as a percentage is 21.65%. This value tells you how much of a whole the fraction represents when you look at it in terms of hundredths.
The fraction 21/97 is a simple way to write a part of a group that has 97 equal pieces. It shows that 21 of those pieces are being considered. Because the denominator (97) is a prime number, the fraction cannot be reduced any further, which makes it a unique representation of that portion.
In everyday situations, you might see a percentage like 21.65% on a report card, a financial statement, or a survey result. Knowing that it comes from the fraction 21/97 helps you understand the exact count behind the rounded figure.