Free Online Percentage Calculator

Calculate percentage instantly with our professional percentage calculator. Find percentage of a number, percentage increase or decrease, and compare two values accurately.

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What is Percentage?

Percentage is a way of expressing a number as a fraction of 100. It is widely used in finance, education, business, statistics, and daily calculations.

Uses of Percentage Calculator

  • Calculate discounts and price reductions
  • Find exam scores and marks percentage
  • Measure profit and loss
  • Compare growth or decline values
  • Financial planning and budgeting

Why Use Our Tool?

This free online percentage calculator is fast, accurate, mobile-friendly, and SEO optimized. It works instantly without signup and helps users worldwide.

How Percentage Calculations Work

This tool handles the three most common percentage problems: finding what percentage one number is of another, finding a percentage of a number, and calculating percentage increase or decrease between two values.

How It Works

For 'X% of Y', the tool multiplies Y by X and divides by 100. For percentage change, it uses ((New Value − Old Value) ÷ Old Value) × 100 to show whether the change is an increase or a decrease.

Why Use This Tool

Frequently Asked Questions

How do I calculate what percentage 45 is of 60?

Divide 45 by 60 and multiply by 100 — the tool does this instantly and shows 75%.

Can this calculator show percentage decrease as a negative value?

Yes, when the new value is lower than the old value, the result is shown as a percentage decrease.

Is this the same formula used for calculating grades?

Yes, the same 'part over whole times 100' logic applies to marks, attendance percentage, and most everyday percentage questions.