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Percentage Calculator

Calculate percentages, percentage change, and percentage of amounts.

Basic Percentage

What is X% of Y?

Result:
0

Percentage Change

What is the % change from X to Y?

Percentage Change:
0%
Absolute Change:
0

Reverse Percentage

X is what % of Y?

Percentage:
0%

Apply Percentage Change

Increase or decrease a value by a percentage

Change Amount:
0
Final Amount:
0

Percentage Breakdown

Break down an amount into percentages

Total: 0

Percentage Formulas

Basic Calculations:

  • • Percentage of amount: (Percentage ÷ 100) × Amount
  • • Percentage change: ((New - Old) ÷ Old) × 100
  • • What percent: (Part ÷ Whole) × 100

Common Uses:

  • • Calculate discounts and markups
  • • Analyze growth rates and changes
  • • Determine tax amounts and tips
  • • Compare proportions and ratios

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© 2025 Developer & Financial Tools. Built with Nunjucks and Alpine.js.

All calculations run locally in your browser for privacy and speed.

Build v1.0.0.154154 • Aug 14, 2025, 02:49 AM EDT

main@64c1e45

v1.0.0.154154