Percentage Change Calculator
Calculate percentage increase or decrease between initial and final values.
Input Parameters
Calculation Results
Formula & How Percentage Change Calculator Works
Percentage change quantifies the relative difference between an original value and a new value.
- Enter Initial Original Value: Input your target parameter value.
- Enter Final New Value: Input your target parameter value.
- Apply Formula: Calculate using
Change % = ((Final - Initial) / |Initial|) × 100. - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)
How to calculate 20% increase?
Multiply the original number by 1.20.
Authoritative Standards & Verified Reference Citations
Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
Open government data, scientific datums, and public sector mathematical reference datasets.
Australia's national authority on physical, chemical, and biological metric measurement standards.
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