Calculate percentage increase, decrease, discount, tip, tax, markup, and more. Free percentage calculator with step-by-step solutions. Find what percent, percent of, and percent change instantly.
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The fundamental percentage formula is: (Part ÷ Whole) × 100 = Percentage
For example, to find what percentage 25 is of 100: (25 ÷ 100) × 100 = 25%
Calculate savings instantly during sales. For example, a 30% discount on a $150 item saves you $45, making the final price $105. Our calculator shows you exactly how much you save on Black Friday deals, clearance sales, and coupon stacking.
Never struggle with tip calculations again. For a $47.83 bill, a 20% tip is $9.57, making your total $57.40. Split between 4 people? That's $14.35 each. Our calculator handles any tip percentage and split configuration.
Convert your points to percentages and letter grades instantly. Scored 85 out of 100? That's 85%, typically a B grade. Our grade calculator supports custom grading scales and weighted assignments.
Calculate profit margins, markup percentages, and ROI. If you buy for $50 and sell for $75, that's a 50% markup and 33.33% profit margin. Essential for pricing strategies and financial analysis.
Understanding the difference is crucial: If interest rates rise from 3% to 5%, that's an increase of 2 percentage points, but a 66.67% increase. Our calculator clearly distinguishes between these concepts to prevent costly mistakes.
When dealing with multiple percentage changes, you can't simply add them. A 10% increase followed by a 10% decrease doesn't return you to the original value. Use our multi-step calculator to track compound percentage changes accurately.
To calculate 15% of $47.83: multiply 47.83 × 0.15 = $7.17. Your total bill would be $47.83 + $7.17 = $55.00. For quick mental math: find 10% ($4.78) and add half of that ($2.39) to get approximately $7.17.
To find the percentage: (37 ÷ 50) × 100 = 74%. This typically translates to a C grade in most grading systems. You answered 74% of the questions correctly.
First, find the difference: 150 - 120 = 30. Then divide by the original value: 30 ÷ 150 = 0.2. Multiply by 100 to get 20% decrease. The value decreased by 20%.
To find 20% of $80: 80 × 0.20 = $16 discount. The final price is $80 - $16 = $64. You save $16, which is 20% of the original price.
Markup % = ((Selling Price - Cost) ÷ Cost) × 100. For example, if cost is $50 and selling price is $75: ((75 - 50) ÷ 50) × 100 = 50% markup. This means you're charging 50% above your cost.