How do I work out a percentage of a number?
To calculate percentages, start by writing the number you want to turn into a percentage over the total value so you end up with a fraction.
Then, turn the fraction into a decimal by dividing the top number by the bottom number.
Finally, multiply the decimal by 100 to find the percentage.
How do you calculate percentages easily?
Generally, the way to figure out any percentage is to multiply the number of items in question, or X, by the decimal form of the percent. To figure out the decimal form of a percent, simply move the decimal two places to the left. For example, the decimal form of 10 percent is 0.1.
How do I calculate a percentage of a percentage?
To calculate a percentage of a percentage, convert both percentages to fractions of 100, or to decimals, and multiply them. For example, 50% of 40% is calculated; (50/100) x (40/100) = 0.50 x 0.40 = 0.20 = 20/100 = 20%. NOTE: It is not correct to divide by 100 and use the percent sign at the same time.
How do I calculate a percentage between two numbers?
The percentage difference between two values is calculated by dividing the absolute value of the difference between two numbers by the average of those two numbers. Multiplying the result by 100 will yield the solution in percent, rather than decimal form.