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question: find the percentage A is of B

= (B-A)/B x 100 . You must then take the answer and subtract it from 100 to get the correct answer, which would make the formula:

(B-A)/B x 100 = C, 100 - C = percentage A is of B

for example, find what percentage 57 is of 90:

B - A

90-57=33

/B

33/90=0.3666

x 100

0.3666 x 100 = 36.66.

100 - 36.66 = 63.33, which is the percentage that 57 is of 90

Q: How do you find out what percentage a number is of another number?

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a number increase from 500 to 625 find the percentage increase

You take your percentage and divide it by 100 then times it by your whole number or what you are trying to find the percent of

http://www.mathsisfun.com/percentage-difference.html theres your answer...

To find the percentage a number is of a another number, divide the "is" number by the "of" number. Then, change the decimal into a percent. (Click on the link to learn how to change a decimal to a percent: http://wiki.answers.com/Q/How%20do%20change%20a%20decimal%20to%20percent)12/240 = 0.050.05 = 5%

10, of course1010%1010% of 100 is 10.10 percent of 100 is 10.Basically to find the number that is a percentage of another number, you just need to multiply them together. However, just remember that you must convert the percentage to a decimal and to convert, you must divide the percentage by 100.

Related questions

The answer depends on whether you wish to find one number as a percentage of another or if you want a given percentage of a number.

I guess you mean find the percentage of one number of another, eg what percentage of 100 is 30: Divide the number for which the percentage of the other is required by the other number (making it a fraction of the second number) and multiply it by 100 %.

The answer depends on what the percentage problem is. The equations will be different depending on whether you want to find:one number as a percentage of another,a given percentage of a number,the percentage change applied to a given number,find the original number if given the number after the percentage change.

The answer will depend on whether you want percentage equivalents of rational numbers or one rational number as a percentage of another.

Multiply the number you want a percentage from by the number of the percentage with a decimal point in front ( 100 x .6 = 60% or 100 x .06 =6%) To find out what percentage a certain number is of another number divide it by that number. (70 / 100 = .7 or 70% or 100/ 70 is 1.42 or about 140%)

To find the percentage of one number in relation to another number then divide the relative number by the base number and multiply the result by 100.Example : what percentage of 54 is 21. Then 21 is the relative number and 54 is the base number. Percentage = 100 x 21/54 = 38.89 (2dp)

To find the percentage of one number in relation to another number then divide the relative number (in this case 7) by the base number (in this case 19) and multiply the result by 100.100 x 7/19 = 36.84% (2dp)

To find the percentage of one number in relation to another number then divide the relative number (in this case 28) by the base number (in this case 63) and multiply the result by 100.100 x 28/63 = 44.44% (2dp)

To find the percentage of one number in relation to another number then divide the relative number (in this case 8) by the base number (in this case 60) and multiply the result by 100.100x 8/60 = 13.33% or 131/3%

To find the percentage of one number in relation to another number then divide the relative number (in this case 33) by the base number (in this case 37) and multiply the result by 100.100 x 33/37 = 89.19% (2dp)

To find the percentage that one number is of another number, find the fraction of the second number that the first is (ie put the first over the second) and multiply by 100 %: 56 as a percentage of 3024 is: 56/3024 x 100 % = 100/54 % = 123/27 % ≈ 1.85 %

a number increase from 500 to 625 find the percentage increase