A value or ratio stated as a fraction of 100 in mathematics is called a percentage. Divide the result by the total and multiply it by 100 to get the percentage of a given number. Thus, the percentage refers to a portion of one hundred. You must know to calculate a percentage in your real life. It is indicated by using the symbol "%." The methods for calculating percentages are as follows:
What is the percentage:
The value of the whole is always 100 in a percentage, which is a fraction or ratio. For instance, if you received a score of 30% on a maths examination, which equals 30 out of a possible 100. In this case, the percentage symbol % is read as a percent or a percentage. It is written as 30:100 and a fraction of 30/100 ratio. To translate this percent symbol into a fraction or decimal counterpart, substitute divided by 100 for it.
Percentage change between two numbers:
Percentage change is the shift in a quantity's value over time expressed as a percentage. As an illustration, an increase in population, a decline in poverty, etc. There is a formula to display the amount of change as a percentage. Two situations could occur when computing % change and those are as follows:
→ • Percentage increase:
When a value increases over time, the term percentage increase refers to the percentage change. For instance, a surface's bacterial population may increase, or the population as a whole may increase.
→ • Percentage decrease:
A value's percentage change as it is dropped over time is referred to as a value's percentage reduction. For instance, the amount of rainfall has decreased, the number of Covid patients has decreased, etc.
Calculating percentage:
→ • Determine the format of the initial number:
A decimal or fractional number can be used to represent a percentage. For instance, a fraction is 3/20, and a decimal value is 0.57. The following mathematical operation on the number will depend on the number's initial format.
• 0.57
• 3/20
→ • Turn the number into decimal:
Before moving on to the next step, you should not do anything if the value to be converted to a percentage is a decimal, such as 0.57. If it is a fraction, such as 3/20, the decimal is obtained by dividing the numerator (the upper number three) by the denominator (the lower number twenty). For instance, for 3/20:
• 3/20 = 0.15
→ • Multiply the decimal by 100:
To convert a decimal number to a percentage, multiply it by 100.
• 0.57 x 100 = 57%
• 0.03 x 100 = 3%
When calculating a fraction, first determine the decimal, then multiply it by 100:
• 3/20 = 0.15 x 100 = 15%
Wrapping it up:
Parts per hundred are referred to as a percentage. Comparing two quantities is the most fundamental application of percentages. You should be clear about the fundamentals of percentages, such as their definitions, formulas, and applications. They can help determine how much a difference differs from a benchmark or starting point and are especially useful for comparisons.
No comments:
Post a Comment