# Percentage Questions and Answers (Q&A)

It is 85% because there is a formula and it is part over whole and then percent over 100 and then what you do is 170 over 200 = X over 100. That was step one now step two is to multiply 170 times 100 which equals 17000. Then you divide by 200 and you get 85%.

#### dimsdale

Percentages are basically representations of the share of something out of a 100. Say you had 20 toffees and lost 5 of them you would have lost 25 of your toffees. This means that loosing 5 toffees out of 20 is the same as loosing 25 toffees out of a 100. It is better to explain it this way because it becomes easier to generalize both large and small values to create a good estimate and comparison.

For instance, you can calculate a probability by simply dividing the number and arriving at a decimal value such as 0.3483 which you can then convert into a percentage.

#### Kendrell

One of the simplest ways to calculate the percentage of something is by using a calculator. However, you must know which numbers to type into the calculator. One way is to take the amount and divide it by the total amount. When you do this, you will have a decimal number. Then multiply the decimal number by 100.

That is the percentage. For example, if you are a student. You received your test back from the teacher. There were 150 questions on the test. You miss 35 of the questions. What is the percentage of the questions you missed. If you calculate 35 divided by 150, the answer is 0.23333. So, you missed a little over 23% of the questions.