Advanced Percentage Calculator

Our free online percentage calculator helps you solve various percentage-related problems quickly and accurately. Whether you need to calculate percentage of a number, find percentage increase or decrease, or determine the original value before a percentage change, this tool has you covered.

Key Features

Calculate percentage of any number
Determine percentage increase or decrease
Find original number before percentage change
Mobile-friendly interface
Instant results with step-by-step explanations

Percentage of a Number

What percentage? Of what number?

Percentage Change

Original Value New Value

Find Original Number

Percentage Result Value

Percentage Calculator FAQs

How do I calculate percentage of a number?

To calculate percentage of a number, multiply the number by the percentage value and divide by 100. For example, to find 20% of 500: (20 × 500) ÷ 100 = 100.

How do I calculate percentage increase?

Percentage increase = [(New Value - Original Value) / Original Value] × 100. Our calculator does this automatically for you.

Can I calculate reverse percentages?

Yes! Use our "Find Original Number" calculator to determine the original value before a percentage change.