How do percent on calculator

Sometimes, you will be required to calculate percentages by working backward. This is also referred to as reverse percentages and it is used when the percentage and the final number are given and the original number is to be calculated. The following are ways to calculate the percentage by working backward:.

Divide the result of the multiplication by the percentage. You should multiply the final number as given in the math problem by The next and final step is to divide the result of the multiplication carried out under step two by the percentage number given in the question.

Therefore, the original number was 1, Related: Your Guide to Careers in Finance. Here are several examples of percentages and how to calculate them:. What is the price of a ticket this year? To convert the decimal number, 3. Therefore, 3. To convert the decimal number 0. Next, multiply the final price by In the math world, working out percentages usually means that one of those terms is missing and you need to find it.

If the question is "What percentage of 40 is 10? If the question is "What is 25 percent of 40? Using the same logic, if the question is "10 is 25 percent of what?

If the omitted term is the percentage, divide the part by the whole using your calculator to determine the answer. For the example equation, this is. If your calculator has a percentage button, press it to determine the percentage. If your calculator does not have such a button, multiply your previous answer by to determine the percentage:. If the omitted term is the part, use the calculator to multiply the whole by the percentage to determine the answer. If your calculator has a percentage button, the calculation is as follows:.

See if you can match your problem to one of the samples below. The problem formats match the input fields in the calculator above. Formulas and examples are included. Find the change in percentage as an increase or decrease using the Percentage Change Calculator. Solve decimal to percentage conversions with our Decimal to Percent Calculator. Convert from percentage to decimals with the Percent to Decimal Calculator. If you need to convert between fractions and percents see our Fraction to Percent Calculator , or our Percent to Fraction Calculator.

If you have a number that is already represented by a decimal, converting that to a percentage is easy. Memorize basic fraction conversions. It is useful if you can memorize the percentage representations of certain basic fractions. Because the denominator for a percentage is always , certain values are constant. Method 2. Add percentages very directly. Because percentages all represent fractions with the common denominator of , you can add a list of percentages without any additional work. By contrast, remember that to add fractions, you must work through the steps of finding common denominators and converting your fractions to those common denominators.

With percentages, however, no additional work is necessary. Just add the numbers together. Subtract percentages in the same manner. Again, because percentages represent fractions with the common denominator of , you do not need to do any additional work to subtract percentages.

Suppose you want to calculate an income percentage. How much is left? Simply use your calculator to perform the subtraction of Multiply or divide using decimal equivalents. Method 3. Convert the percentage to a decimal and multiply. To calculate the percentage of the whole number, you need to first turn the percentage into a decimal as already described. Then simply multiply. Then just multiply 0. Write your result without a percentage symbol. When you set out to find a percentage of a whole number, your result will be a number and not a percentage.

Method 4. More advanced, graphing calculators may not have this key because the makers expect that you can operate without it. But many more basic calculators will have it. You should get the result of Whenever you are using a calculator for percentage calculations, you should make sure to press the Clear C or All Clear AC button before starting. The calculator will the proceed to calculate.