% Percentage Calculator
How to Use the Percentage Calculator
1. What is x% of y?
Explanation: This calculator helps you find a specified percentage of a given number, which is useful for quickly calculating discounts, taxes, or portions of any amount.
Mathematical Formula:
How It Works: To calculate x% of y, we divide x by 100 to convert it to a decimal form and then multiply by y. For example, to find 20% of 150, you divide 20 by 100 to get 0.2, then multiply by 150 to get 30.
2. X is what % of y?
Explanation: This calculator tells you what percentage one number is of another, which is often used to compare values, like determining a test score or a business metric.
Mathematical Formula:
How It Works: To find what percentage x is of y, divide x by y and then multiply the result by 100 to get the percentage. For instance, if you want to know what percentage 30 is of 150, divide 30 by 150 to get 0.2, then multiply by 100 to find that it’s 20%.
3. What is the percentage increase/decrease from x to y?
Explanation: This calculator measures the percentage change from one number to another, helping you understand growth or decline, such as in prices, population, or sales.
Mathematical Formula:
For percentage increase:
For percentage decrease:
How It Works: To calculate the percentage change, subtract the original value (x) from the new value (y). If the result is positive, it’s a percentage increase; if negative, it’s a percentage decrease. Divide this difference by the original value (x) and multiply by 100. For example, to find the percentage increase from 100 to 150, subtract 100 from 150 to get 50, then divide by 100 and multiply by 100 to get a 50% increase.