Percentage Increase/Decrease Calculator
Calculate percent increase or decrease between two values.
Open this page in the browser and use the calculator fields below.
Explanation
Percentage Increase/Decrease Calculator helps users perform a common finance calculation quickly and accurately. This page provides a clear interface to enter the necessary inputs and receive instantaneous results without needing spreadsheets or complex software. The calculator focuses on usability: labeled fields, sensible defaults, unit options where relevant, and immediate feedback so users can iterate through scenarios and compare outcomes. Practical examples and short guidance are included to help both beginners and experienced users. Use cases range from everyday decisions like shopping discounts and budgeting to more advanced planning like loan comparisons and investment projections. Because this tool runs entirely in the browser, it is fast and private — no data leaves your device. The formulas used are standard and widely accepted in financial and technical contexts. For reference, a formula section shows the exact mathematical relationship used for the calculation so you can verify results or reproduce them elsewhere. Always verify critical financial decisions with a professional, especially for tax and legal matters. This calculator is optimized for mobile and desktop: the layout adapts to narrow screens and preserves readability. Performance and SEO best practices were considered when building this page: concise content, unique metadata, structured data (JSON-LD), and a sitemap entry to help search engines index the page quickly. Tip: try multiple input combinations to compare scenarios. For loan-related calculators, compare shorter and longer tenures to see trade-offs between monthly payments and total interest. For investment calculators, adjust expected rates conservatively and consider inflation when planning long-term goals.
Formula
Percent change = ((new - old)/old)*100
FAQs
When is percent change infinite?
When old value is zero.
Sign meaning?
Positive for increase, negative for decrease.
Can it exceed 100%?
Yes, if increase is more than double.
Use in finance?
Common to compare revenues, prices.
Rounded result?
Round sensibly for display.