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Two-fifths is equivalent to 40 percent. Dividing the numerator, 2, by the denominator, 5, yields a decimal value of 0.40. Decimal values can be converted to percentages by multiplying by 100, which means that 0.40 is equal to 40 percent.

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As of 2013, an estimated 13.2 percent of the population in the United States is African-American. This percentage reflects those who identified themselves as a single race and does not include those who identify as having two or more races, which may include some African-Americans.

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Figuring percentages is determining how many of something is per 100. For example, 50 percent is the same as 50 per 100.

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The easiest way to calculate percentage is to divide the whole into the part and multiply the answer by 100. If a student gets 20 out of 25 questions correct, his percent correct is calculated by dividing 20 by 25 for a total of 0.8 and multiplying by 100.

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To figure out a percentage, a person simply divides the two numbers in question then multiplies the answer by 100. In most cases, a small number is divided by a large number. Depending on the circumstance, however, the process may be reversed.

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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.

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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.

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As of October 2013, 65.9 percent of high school graduates enroll in college, according to the Bureau of Labor Statistics. This percentage represents a reduction from a high-enrollment point in 2009, when the figure was 70.1 percent.

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Humans engage 100 percent of their brains, despite a popular myth that only 10 percent is used. Functional brain imaging studies show that people are capable of activating all parts of their brains when exposed to different contexts. However, not all of the brain is necessarily engaged at all times.

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The formula for finding percentages is to divide part of the whole quantity by the whole quantity and then multiply by 100 percent. A percentage change can be found by simply dividing the old quantity into the difference between the old quantity and the new quantity. This will produce some kind of d