How to Calculate Percent Agreement Between Two Numbers

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The calculation of the percent agreement requires you to find the percentage of difference between two numbers. This value can prove useful when you want to see the difference between two numbers in percentage form. Scientists may use the percent agreement between two numbers to show the percentage of relationship between varied results. Calculating the percent difference requires you to take the difference of values, divide it by the average of the two values and then multiply that number times 100.

    Subtract the two numbers from each other and place the value of the difference in the position of the numerator.

    For example, if you want to calculate the percent of agreement between the numbers five and three, take five minus three to get the value of two for the numerator.

    Add the same two numbers together, and then divide that sum by two. Place the value of the quotient in the denominator position in your equation.

    For example, using the numbers five and three again, add these two numbers together to get a sum of eight. Then, divide that number by two to get a value of four for the denominator.

    Divide the numerator and denominator to get a quotient in the form of a decimal.

    For example, divide the numerator's value of two by the denominator's value of four to get the decimal 0.5.

    Multiply the quotient's value by 100 to get the percent agreement for the equation. You can also move the decimal place to the right two places, which provides the same value as multiplying by 100.

    For example, multiply 0.5 by 100 to get a total percent agreement of 50 percent.


    • The term sum refers to the value received when adding two values. Difference refers to the value received from subtraction. Quotient refers to the value received when you divide two numbers.


About the Author

Avery Martin holds a Bachelor of Music in opera performance and a Bachelor of Arts in East Asian studies. As a professional writer, she has written for, Samsung and IBM. Martin contributed English translations for a collection of Japanese poems by Misuzu Kaneko. She has worked as an educator in Japan, and she runs a private voice studio out of her home. She writes about education, music and travel.