Percent Increase and Decrease

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What is Percent Increase?

Back

Percent Increase is the amount that a value has increased, expressed as a percentage of the original value. Formula: ((New Value - Original Value) / Original Value) x 100.

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What is Percent Decrease?

Back

Percent Decrease is the amount that a value has decreased, expressed as a percentage of the original value. Formula: ((Original Value - New Value) / Original Value) x 100.

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How do you calculate a tip?

Back

To calculate a tip, multiply the total bill by the tip percentage (as a decimal). Example: For a $100 bill and a 15% tip, the tip is $100 x 0.15 = $15.

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What does 'discount' mean?

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A discount is a reduction in the price of a product or service, usually expressed as a percentage of the original price.

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How do you find the sale price after a discount?

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Sale Price = Original Price - (Original Price x Discount Percentage). Example: For a $50 item with a 20% discount, Sale Price = $50 - ($50 x 0.20) = $40.

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What is markup?

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Markup is the amount added to the cost price of goods to cover overhead and profit. It is usually expressed as a percentage of the cost price.

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How do you calculate markup?

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Markup = (Selling Price - Cost Price) / Cost Price x 100. Example: If a product costs $20 and sells for $30, Markup = ($30 - $20) / $20 x 100 = 50%.

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What is the formula for calculating the final price after a markup?

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Final Price = Cost Price + (Cost Price x Markup Percentage). Example: For a $10 item with a 30% markup, Final Price = $10 + ($10 x 0.30) = $13.

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If a product is $80 and has a 25% discount, what is the sale price?

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Sale Price = $80 - ($80 x 0.25) = $80 - $20 = $60.

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What is the relationship between percent increase and percent decrease?

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Percent increase and percent decrease are inverses. A percent increase in a value followed by a percent decrease will not return to the original value.