How to Use a Calculator to Figure Percentage

How to Use a Calculator to Figure Percentage
••• MangoStar_Studio/iStock/GettyImages

Percentages are proportions representing the size of one quantity compared with another. Percentages can represent sale prices, such as 20 percent off, success rates, such as getting 86 percent of questions correct, or parts of a whole, such as the portion of total company sales generated by a salesperson. Percentages also help you make a meaningful comparison when two different data sets have different totals. For example, you can compare how often two batters get a hit using percentages, even though the batters may have different numbers of at-bats and hits. To calculate a percentage with a calculator, you need to know two comparable values.

    Enter the portion you are converting to a percentage in the calculator. If you are calculating a test grade, you would enter the number of correct answers. For example, if the student got 43 questions right, enter "43."

    Push the division button on the calculator. The division button is usually represented by "÷."

    Enter the second quantity, often the total amount, in the calculator. To calculate a test grade, enter the total number of questions on the test. For example, if there were a total of 50 question on the test, enter "50."

    Push the equals button, usually represented by the "=" sign on the calculator, to determine the proportion. For example, if a student got 43 out of 50 questions correct, your answer is .86.

    Push the multiplication button, usually represented by "×," on the calculator.

    Enter "100" and push the equals button to convert the proportion to a percentage. For example, 0.86 becomes "86," meaning 43 out of 50 equals 86 percent.


    • Make certain you divide the portion by the total (and not the other way around) for the correct answer.

Related Articles

How to Calculate the Percentage of a Number
How do I Calculate 0.1%?
How to Subtract 20% on a Calculator
To Calculate Arcsine, What Buttons Do You Press on...
How to Combine the Probability of Two Events
How to Do Discount Math Problems
How to Add Percentage to a Price
How to Calculate the Percent of Something
How to Determine Your Practice CLEP Score
How to Calculate the Percent of One Hour
How to Divide a Percent Using a Calculator
How to Calculate a Test Average
How to Calculate the Percentage of Another Number
How to Write a Division Story Problem
How to Calculate Weighted Totals
Calculate Average Deviation
How to Calculate Percentage Decrease on a Calculator
How to Change Any Number to a Percent, With Examples
How to Multiply Vectors
How to Calculate School Grades by Percentage

Dont Go!

We Have More Great Sciencing Articles!