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| How to calculate the percentage |
We can use absolute numbers or percentages to calculate the percentage of something. For example, we can calculate the percentage of steps that were actually taken by a person on a 10,000-step walk, or the percentage of solutions to the Rubik's cube that were actually done by someone.
Use the percentage (%) symbol to display the percentage of something that is equal to or greater than a given number. This is a useful way of finding percentages when you want to find out how close you are to a certain percentage without actually needing to use a calculator. For example, if we are looking to find out the percent of the population under 50 years old that is over 180 cm tall, we could express the idea as \$X ~= 18% of the population \$Y (that is, 18% of those of us who are over 180 cm tall – \$Y ~= 18
The simplest way to calculate percentages is by using the formula 0.01*(Y/X) where X is the denominator and Y is the numerator. For example, if we have \$100 in total money and \$15 left over, then the percentage that is left over is 15%.
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| percentage formula |
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calculation