1. What is Percentage Decrease?

Percentage decrease measures the reduction in a value as a percentage of its original value. It's commonly used to track declines in prices, quantities, or performance metrics.

2. How Does the Calculator Work?

The calculator uses the percentage decrease formula:

Where:

• Old Value — The original or starting value
• New Value — The current or reduced value

Explanation: The formula calculates what percentage of the original value has been lost in the decrease.

3. Importance of Percentage Decrease

Details: Percentage decrease is crucial for analyzing trends, comparing reductions across different scales, and making informed decisions in finance, business, and science.

4. Using the Calculator

Tips: Enter both old and new values as positive numbers. The old value must be greater than zero. The new value should be less than or equal to the old value for a decrease.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between percentage decrease and absolute decrease?
A: Absolute decrease shows the numerical difference, while percentage decrease shows the relative change compared to the original value.

Q2: Can the result be negative?
A: If the new value is greater than the old value, you'll get a negative result, which actually indicates a percentage increase.

Q3: How is this different from percentage change?
A: Percentage decrease is a specific case of percentage change where the value has decreased. Percentage change can be either positive or negative.

Q4: What if my old value is zero?
A: The calculation is undefined when the old value is zero, as you cannot divide by zero.

Q5: How precise are the results?
A: Results are rounded to 2 decimal places for readability while maintaining reasonable precision.