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Percentages and decimals are two ways to express a fraction or part of a whole.
A percent (abbreviated as %) literally means 'per hundred' and is a unit of ratio that expresses a number of units per hundred units. The symbol % therefore simply means 'divided by 100'. For example, 45% means 45 per 100, or more simply, 0.45.
A decimal, on the other hand, is a way to express whole numbers, fractions, and mixed numbers using the decimal system, in which a comma is used to separate the whole part of a number from the fractional part. In a decimal number, digits to the left of the comma represent whole amounts, while digits to the right represent parts of a whole.
Converting percentages to decimals and vice versa is an important skill in many areas, including math, finance, physics, statistics, and many other fields. It's relatively straightforward:
It's important to understand that converting between percentages and decimals does not change the value of the number, but only the way it is presented. 45% and 0.45 both represent the same part of a whole.