To turn a number into its equivalent percentage, a person should move the decimal point two places to the right and then add the percent sign. For example, to turn the number 7 into a percentage, a person would move the decimal point two places to the right, which requires the addition of two 0s after the 7, and the percentage is expressed as 700 percent. In the case of .35, moving the decimal point two places to the right expresses the number in its percentage form as 35 percent.
Know MorePercentage equivalents need not be confined to whole numbers. For example, the number .0572 can be expressed as 5.72 percent. As another example, .0001 becomes .01 percent, which is 1/100 of 1 percent.
The use of percentages in computations existed prior to the invention of the decimal system and can be traced back to Ancient Rome. Taxes levied by the Roman emperor Augustus on certain goods were calculated as 1/100 of the sale amount. These tax computations were similar to the modern tax percentage calculations. The modern term "percent" is derived from the Latin phrase "per centum," which means "by the hundred."
By the Middle Ages, similar calculations based on fractions containing 100 as a denominator were not uncommon. The use of percentages to express interest rates was a standardized practice by the 1600s.
Learn more about Fractions & PercentagesTo 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.
Full Answer >A percentage is subtracted from a number by calculating the percentage in relation to that number and then performing a basic subtraction function. For example, to calculate 200 minus 70 percent, a person must first know that 70 percent of 200 is 140. Then, 140 is subtracted from 200 to get the answer, which is 60.
Full Answer >To add a percentage to a number, change the percentage to a decimal value, and add one to the value. Multiply the number by the result.
Full Answer >To determine the percentage of a number, divide the fraction of the amount by the whole amount, and multiply the result by 100. As AAA Math explains, to calculate what percentage 68 is of 87, divide 68 by 87; This equals approximately 0.7816. Multiply this answer by 100. The final answer is 78.16 percent.
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