VIDEO: How do I calculate percent?

When you are in school the subject mathematics respectively. If you have accounting, at some point you will come across percentages. You always calculate percentages when you want to compare something.

Calculate and compare percentages

1. For example, if you want to calculate the percentage of girls and boys in the class so that you can compare them, do the following:
2. There are 21 boys and 26 girls in the class.
3. First, find out the total number of students. The result, the 47 students are 100%.
4. If you now want to know what the percentage of boys is, use the simple rule of three, also known as the cross calculation, as follows:


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5. In words: if 47 students are 100%, what percentage are 21 students? You multiply 21 by 100 and divide the result by 47. This gives you the 44.68% boys in the class.
6. In Counting: 47 = 100
   21 = X
   X = (21 x 100): 47 = 44.68%
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7. You can calculate the proportion of girls in the same way: (26 x 100): 47 = 55.32%.
8. So the percentage of boys is 44.68% and the percentage of girls is 55.32%.