Learning how to calculate percentage can be very helpful in many real-world situations. For example, you may need to calculate what tips to leave at a restaurant, or how much sales tax you’ll need to pay on a purchase. Fortunately, the process for calculating percentage is relatively straightforward, and with a little practice, you’ll be able to do it quickly and easily.
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What is a percentage?
A percentage is a way of expressing a number as a fraction of 100. It is often used to express a change or comparison. For example, an increase of 5% would be an increase of 5 out of every 100. To calculate a percentage, we need to know two values: the whole and the part.
How to calculate percentage
If you need to calculate a percentage, there are a few different ways that you can do it. The most important thing is to make sure that you’re using the right formula for the situation.
To calculate a basic percentage, you can use this formula:
Percentage = Number ÷ Total × 100
For example, if you wanted to know what 50% of 100 is, you would do this calculation:
50 ÷ 100 × 100 = 50
So, 50% of 100 is 50. Easy, right?
But sometimes you need to calculate a more complex percentage. For instance, let’s say you have two numbers, A and B, and you want to know what percentage B is of A. In this case, you would use this formula:
Percentage = (B ÷ A) × 100
For example, let’s say A is 200 and B is 150. To calculate the percentage, we would do this:
(150 ÷ 200) × 100 = 75%
So in this case, 75% of 200 is 150.
Remember, the most important thing is to use the right formula for the situation!
Example problems
To calculate percentage, you need to divide the numerator by the denominator and then multiply the result by 100. The symbol for percentage is %.
Here are some examples:
1) What is 10% of 150?
To solve this problem, you would divide 10 by 150 to get 0.0667. Then, you would multiply that answer by 100 to get 6.67%. So, 10% of 150 is equal to 6.67%.
2) 45% of what number is 36?
To solve this problem, you would divide 36 by 45 to get 0.8000. Then, you would multiply that answer by 100 to get 80. So, 45% of 80 is equal to 36.
Conclusion
Calculating percentages can be a tricky business, but luckily there’s a simple formula that makes it easy. With a little practice, you’ll be calculating percentages like a pro in no time. So get out there and start putting your new skills to use!