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How to Calculate Percentage Decrease: A Step-by-Step Guide

Learn the simple formula to calculate percentage decrease and apply it to real-life scenarios effectively.

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Video transcript

To calculate a percentage decrease, use the formula:

(Original Value - New Value) / Original Value * 100%.

For instance, if an item originally costs $50 and is now $40, the calculation would be:

(($50 - $40) / $50) * 100% = 20% decrease. This straightforward method helps you quickly determine the percentage reduction in value.

Questions and answers

  1. What is a percentage decrease?

    A percentage decrease measures how much a value has reduced in comparison to its original value, expressed as a percentage.

  2. How do you calculate a percentage increase?

    To calculate a percentage increase, use the formula: (New Value - Original Value) / Original Value * 100%.

  3. What is the formula for calculating percentages?

    The general formula for calculating a percentage is: (Part/Whole) * 100%.

  4. Can percentage decreases be negative?

    No, percentage decreases indicate a reduction in value, so they are expressed as positive numbers representing the decrease.

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