6/23 as a percentage is 26.09%. This number tells you how much of a whole the fraction represents when you think in terms of 100 parts.
The fraction 6/23 is a bit more than one quarter, but less than one third. When you see it written as a percentage, it’s easier to compare with other numbers that are also expressed out of 100.
In everyday use, you might round 26.09% to 26% for quick estimates, but the precise value gives a clearer picture when exactness matters.