Common Scenarios 💰 Discounts Shopping Sales A $500 item is 20% off. What is the final price? How much do you save? 📈 Growth Business Metrics Revenue went from $10,000 to $12,000. What is the month-over-month growth rate? 🧾 Tax & Tips Tipping The bill is $200, and you want to leave a 15% tip. What is the total amount? Calculation Formulas 1. Find Value (Y% of X) Result = X × (Y / 100) 2. Find Percentage (X is what % of Y) Result = (X / Y) × 100% 3. Percentage Change (From X to Y) Result = ((Y - X) / X) × 100% Frequently Asked Questions Percentage vs. Percentage Point? Percentage is a ratio (e.g., grew by 10%). Percentage Point is the arithmetic difference between two percentages. Example: Rate moving from 2% to 3% is a 50% growth, or a 1 percentage point increase. How to calculate a discount price? Subtract the discount amount from the original price. Formula: Price × (1 - DiscountRate). For 20% off, multiply by 0.8. What is negative growth? When the new value is less than the old value, the change rate is negative. This indicates a decrease or drop in value. Why is (A/B)*100 same as A/(B/100)? This is basic arithmetic. Both operations result in A divided by B, then multiplied by 100. How many decimal places are shown? We default to two decimal places for clarity, but won't show decimals for whole integer results. What is Year-over-Year (YoY)? YoY compares results for the same time period in different years (e.g., this March vs. last March). MoM compares with the previous month. Can I use this offline? Yes. Once the page loads, all calculations happen locally in your browser, so it works even without an internet connection. Is it free? Yes, this tool is 100% free with no usage limits. More Free Tools BMI Calculator Calculate Body Mass Index (BMI) to assess your weight category and get health tips. Date Calculator Calculate duration between dates or add/subtract days to find a future or past date. Aspect Ratio Calculator Calculate aspect ratios and dimensions. Useful for designers and video editors. Unit Converter Convert length, weight, temperature, and more instantly online. Word Counter Count words, characters, and paragraphs in real-time. Estimate reading time. Random Wheel Visual spinning wheel for random decisions. Enter your choices and spin to pick a winner.