46/82 as a percentage is 56.10%. This number tells you how much of a whole the fraction represents when you look at it on a scale of 100.
The fraction 46/82 can be reduced by dividing both the numerator and the denominator by 2, giving you 23/41. Even though the numbers are smaller, the value stays the same, so it still equals 56.10% when expressed as a percent.
In everyday use, you might see this percentage when comparing parts of a group. For example, if you have 46 out of 82 items, you own a little more than half of the total, which is exactly what 56.10% represents.