This Year Last Year

Calculate percentage change between two values

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Free Percentage Change Calculator - Compare This Year vs Last Year

Our This Year Last Year calculator is a powerful, free online tool designed to help you quickly calculate percentage changes between two time periods. Whether you're analyzing business metrics, tracking personal goals, or conducting financial analysis, this calculator provides instant and accurate results for year-over-year comparisons.

What is Percentage Change?

Percentage change represents the relative difference between two values, expressed as a percentage. It's one of the most important metrics for understanding growth, decline, or performance trends over time. Our calculator uses the standard formula:

Percentage Change = ((This Year Value - Last Year Value) / |Last Year Value|) Ɨ 100

Perfect for Business Analytics and Personal Tracking

This year-over-year percentage calculator is ideal for:

Key Features of Our YoY Calculator

How to Use the Year-over-Year Growth Calculator

Using our percentage change calculator is simple and straightforward:

Understanding Your Results

The calculator provides clear, actionable insights:

Whether you're a business owner tracking quarterly performance, a marketer measuring campaign effectiveness, or an individual monitoring personal financial goals, our This Year Last Year calculator provides the precise percentage change calculations you need for informed decision-making.

Advanced Features

Our calculator handles special cases intelligently, including scenarios where the previous year's value was zero, negative numbers, and decimal inputs. The tool is designed to be robust and reliable for all types of numerical comparisons, making it suitable for professional business analysis and personal use alike.