Free Maths Calculator

Percentage Increase and Decrease Calculator

Increase or decrease an amount by any percentage using the multiplier method: turn the change into one number, then multiply once. It is the fastest exam technique and the one that unlocks compound change later, so the working here names the multiplier every single time. Handy for prices, wages and sale reductions.

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Answer

Method, Step by Step

    Worked Example

    A £240 coat goes up in price by 15%. What is the new price?

    1. Find the multiplier:100% + 15% = 115%, which is 1.15
    2. Multiply once:240 × 1.15 = 276

    Answer: £276

    Try These Yourself

    Decrease 80 by 30%.Show answerHide answer

    Answer: 56

    Multiplier 0.7, and 80 × 0.7 = 56.

    Increase 60 by 5%.Show answerHide answer

    Answer: 63

    Multiplier 1.05, and 60 × 1.05 = 63.

    A £1,200 holiday drops by 12.5%. New price?Show answerHide answer

    Answer: £1,050

    Multiplier 0.875, and 1,200 × 0.875 = 1,050.