GetPercentConvert
    Percentage Change

    Percentage Change Calculator

    Find out how much something has increased or decreased in percentage terms.

    Enter values above to see the result

    Quick Examples

    Understanding Percentage Change

    Percentage change is a mathematical concept that represents the degree of change over time. It is used for many purposes in finance, often to represent the price change of a security. Percentage change can be applied to any quantity that you measure over time. Suppose you are tracking the quoted price of a security. If the price increased, use the formula (New Price - Old Price) / Old Price and then multiply that number by 100. If the price decreased, use the same formula. A positive result indicates an increase (growth), while a negative result indicates a decrease (reduction). Understanding this helps in evaluating performance, assessing risk, and making data-driven decisions.

    Step-by-Step Examples

    See how the math works in these common real-world scenarios.

    1

    Store Discount

    A jacket's price drops from $120 to $90. This is a -25% change (a 25% decrease).

    2

    Stock Market Growth

    A share price goes from $40 to $52. This represents a +30% change (a 30% increase).

    3

    Weight Loss Progress

    Going from 200 lbs to 185 lbs is a -7.5% change in body weight.

    Practical Applications

    Where and why people use this calculator every day.

    Finance & Stocks

    Track the growth or decline of your investment portfolio over time.

    Shopping

    Calculate how much a price has dropped during a seasonal sale.

    Health & Fitness

    Monitor changes in body weight or gym performance metrics.

    Education

    Measure the improvement in test scores from one semester to the next.

    Common Questions

    Everything you need to know about Percentage Change calculations.

    Need a different calculation?

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