Q1: How do I calculate a percentage of a number?
To calculate a percentage of a number, multiply the number by the percentage and divide by 100. Formula: Result = (Value × Percentage) / 100. For example, 20% of 100 = (100 × 20) / 100 = 20.
Q2: What is the difference between percentage and percent?
Percentage and percent are often used interchangeably. Percentage refers to the calculation or result, while percent is the unit (%). Both mean "per hundred" or "out of 100." For example, 50% means 50 out of 100.
Q3: How do I convert a decimal to a percentage?
To convert a decimal to a percentage, multiply by 100 and add the % symbol. For example, 0.25 = 25%, 0.75 = 75%, and 1.5 = 150%. Moving the decimal point two places to the right also works.
Q4: How do I convert a fraction to a percentage?
To convert a fraction to a percentage, divide the numerator by the denominator to get a decimal, then multiply by 100. For example, 3/4 = 0.75 = 75%. Alternatively, make the denominator 100 by cross-multiplying.
Q5: What is the percentage formula?
The basic percentage formula is: Percentage = (Part / Whole) × 100. To find a percentage of a number: Part = (Percentage / 100) × Whole. To find what percentage one number is of another: Percentage = (Part / Whole) × 100.
Q6: How do I calculate percentage increase or decrease?
Percentage change = [(New Value - Old Value) / Old Value] × 100. A positive result is an increase, negative is a decrease. For example, if something goes from 100 to 120: [(120-100)/100] × 100 = 20% increase.