Percentage Calculator
How the Percentage Calculator Computes Percentages, Increases, and Decreases
A Percentage Calculator is a mathematical tool used to calculate percentages, percentage change, percentage increase, and percentage decrease between numbers. Percentages are widely used in mathematics, finance, education, business analysis, and everyday calculations such as discounts, interest, and growth rates.
This calculator determines:
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Percentage of a number by dividing the part by the whole and multiplying by 100
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Percentage increase by measuring growth from an original value to a higher value
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Percentage decrease by measuring reduction from an original value to a lower value
The standard formulas used are:
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Percentage = (Part ÷ Whole) × 100
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Percentage Increase = [(New Value − Original Value) ÷ Original Value] × 100
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Percentage Decrease = [(Original Value − New Value) ÷ Original Value] × 100
By automating these calculations, the Percentage Calculator removes manual errors and provides instant, accurate results. It is useful for calculating discounts, tax changes, exam scores, financial growth, and statistical comparisons.
Whether you are a student solving math problems, a business owner analyzing price changes, or an individual calculating savings, this calculator helps you understand numerical relationships clearly and efficiently.
FAQ
How do you calculate percentage?
Divide the part by the whole and multiply the result by 100.
What is percentage increase?
Percentage increase shows how much a value has grown compared to its original value.
What is percentage decrease?
Percentage decrease shows how much a value has reduced from its original value.
Where are percentages commonly used?
Percentages are used in finance, education, statistics, shopping discounts, and data analysis.