Year Over Year Growth Calculator

What Is Year-Over-Year Growth?

Year-over-year (YoY) growth shows how a value has changed compared with the same period in the previous year. It is a simple way to see whether something has increased, decreased, or stayed the same over a year.

For example, if a business earned $50,000 in revenue last year and $60,000 this year, its revenue has increased by 20%. This is called positive YoY growth.

YoY growth can be:

• Positive: The current-year value is higher than the previous year.
• Negative: The current-year value is lower than the previous year.
• Zero: The current-year value is the same as the previous year.

Businesses use year-over-year growth to track changes in many important metrics. For example, a company may compare its sales, revenue, or profit with the previous year to measure business performance. A website may compare monthly or annual traffic and user numbers to understand whether its audience is growing.

The same concept can be used for other measurements, such as expenses, subscriptions, customers, product sales, or website conversions. Comparing the same period from one year to the next makes it easier to identify long-term trends and understand whether performance is improving or declining.

Year-Over-Year Growth Formula

The Year-Over-Year (YoY) growth formula helps you compare a value from one year with the same value from the previous year. It shows whether the value increased or decreased and by what percentage.

YoY Growth Formula

YoY Growth (%) = [(Current Year Value − Previous Year Value) ÷ Previous Year Value] × 100

Positive Growth Example

Suppose a company's revenue was $100,000 last year and increased to $120,000 this year.

Calculation:

[($120,000 − $100,000) ÷ $100,000] × 100

= ($20,000 ÷ $100,000) × 100

= 20%

So, the company's revenue increased by 20% year over year.

Negative Growth Example

Now, suppose the previous year's revenue was $100,000, but the current year's revenue decreased to $90,000.

Calculation:

[($90,000 − $100,000) ÷ $100,000] × 100

= (-$10,000 ÷ $100,000) × 100

= -10%

The -10% YoY change means the value decreased by 10% compared with the previous year.

A positive percentage indicates growth, while a negative percentage indicates a decline.

How Does the Year Over Year Growth Calculator Work?

The Year Over Year Growth Calculator compares your current value with the value from one year ago to calculate the percentage increase or decrease. It can be useful for tracking changes in revenue, sales, expenses, profits, website traffic, or other business metrics.

Enter Your Growth Data

You only need to provide two values:

• Current Year Value: Enter the value for the current period. For example, if your sales this year are $60,000, enter $60,000.
• Previous Year Value: Enter the value from one year ago. For example, if your sales were $50,000 last year, enter $50,000.

The calculator then compares both values and shows the year-over-year growth rate as a percentage.

Additional Option

You can also select Show Calculation Breakdown if you want to see how the result was calculated step by step. This makes it easier to understand the difference between the two values and how the final percentage was determined.

Where Is Year-Over-Year Growth Used?

Year-over-year (YoY) growth is used across different industries to compare performance from one year to the next. It helps businesses and individuals understand whether a metric is growing, declining, or staying relatively stable.

• Business: Companies use YoY growth to compare revenue, sales, and overall business performance with the previous year.
• Marketing: Marketing teams can track changes in website traffic, leads, and conversions to see whether their campaigns are performing better than last year.
• Finance: Investors and financial teams use YoY comparisons to evaluate earnings, investment performance, and other financial metrics over time.
• E-commerce: Online stores can compare annual orders and sales to understand how their business is growing from one year to the next.
• SaaS: SaaS companies often measure YoY changes in customers, subscriptions, and recurring revenue to monitor long-term business growth.
• Websites: Website owners can compare organic traffic, visitors, or users year over year to identify changes in audience growth and search performance.

Frequently Asked Questions (FAQs)