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Frequently Asked Questions
How is percentage change calculated?
Percentage change is calculated using the formula: ((New Value - Old Value) / |Old Value|) × 100. This gives you the percentage increase or decrease between two values.
What does a positive percentage mean?
A positive percentage indicates an increase from the old value to the new value. For example, if your salary increased from $50,000 to $55,000, that's a 10% increase.
What does a negative percentage mean?
A negative percentage indicates a decrease from the old value to the new value. For example, if a stock price dropped from $100 to $90, that's a 10% decrease.
Why can't the old value be zero?
When the old value is zero, you cannot calculate a meaningful percentage change because you would be dividing by zero. In such cases, you can only say the new value is "100% of the old value" or use absolute change instead.
How can I use this calculator?
Use this calculator to analyze price changes, growth rates, performance metrics, salary increases, investment returns, and any situation where you need to compare two values over time.
Important Disclaimer
For informational purposes only: This calculator provides estimates and should not be considered as professional advice.
Accuracy: While we strive for accuracy, users should verify results independently for critical decisions.