About This Calculator
This Percentage Calculator provides multiple tools for handling everyday percentage problems. Whether you're calculating a percentage of a number, determining what percent one value is of another, reversing a percentage to find the original value, adjusting values by a given percentage, analyzing changes between two values, or calculating the percentage difference between two values— this calculator simplifies the process.
How It Works
- Choose the type of percentage calculation you want to perform.
- Enter the relevant values in the input fields provided.
- Click the "Calculate" button to view the result, along with a step-by-step explanation.
Frequently Asked Questions
How do I calculate the percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 10% of 200 is200 × 10 ÷ 100 = 20.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example, 30 is what percent of 120?30 ÷ 120 × 100 = 25%.
What is a reverse percentage calculation?
Reverse percentage helps you calculate the original value before a percentage increase or decrease. For instance, if the final price is $120 after a 20% increase, the original price is120 ÷ 1.2 = $100.
Can I add or subtract a percentage from a number?
Yes. For example, to add 15% to 200, compute200 × 1.15 = 230. To subtract 15%, compute200 × 0.85 = 170.
How do I calculate percentage increase or decrease?
Subtract the old value from the new value, divide by the old value, then multiply by 100. For example:(120 - 100) ÷ 100 × 100 = 20%increase.
What is percentage difference?
It compares two values relative to their average. The formula is|A - B| ÷ ((A + B) ÷ 2) × 100.