30/84 expressed as a percentage is 35.71%. This number tells you how much of a whole 30 parts out of 84 represent when you look at it in terms of 100.
The fraction can also be reduced to 5/14, which is a simpler way to see the same relationship between the two numbers. Both forms give the same percentage value.
Knowing that 30/84 equals 35.71% can help when you compare parts of a whole, like in a classroom where 30 out of 84 students might be interested in a particular activity.
In everyday situations, this percentage can be used to understand shares, proportions, or success rates without needing to work with the original fraction.