Percentages are calculated by finding what portion a fractional amount takes up out of 100. By comparing a fractional amount to x/100, a percentage can be found.
To calculate percentages on a calculator, divide the part by the whole and then multiply the answer by 100. For example, to find what percent of 80 is 20, divide 20 by 80. The result is 0.25, then multiply 0.25 by 100 which equals 25 percent.
To calculate a percentage, simply divide one number into the other and multiply by 100. The order of division is important, and is determined by the wording of the question.
Percentage calculations come into play in many real-world situations, such as determining how much to tip in a restaurant and figuring out the discounted prices of clothing. Here's how to do these calculations.
Calculate the percentage difference of two numbers by dividing the difference of the numbers by their average. Multiply this answer by 100 to determine the percentage difference.
Jari Jokinen's and the Math Easy Solutions percentage calculators both allow a user to find percentages by entering values into common percentage verbiage used in word problems. The Math Is Fun percentage calculator allows someone to compare two numbers percentage-wise.
To determine a percentage, divide the actual number by the total possible number, and multiply the result by 100. For example, if four out of five doctors agree on something, enter the equation in a calculator as "4 ÷ 5 x 100." The result, 80, is the percentage.