How To Calculate DoD, WoW, MoM and YoY Metrics?

#analytics

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Imagine you are deploy new feature to your application to improve performance and wanting to know if it actually worked.

Should you keep it, adjust it, or drop it? Day-over-Day (DoD), Week-over-Week (WoW), Month-over-Month(MoM) and Year-over-Year(YoY) growth rate gives you the answer.

By comparing this current day results with previous day result, this week’s results with last week’s, similary for month and year you can see trends forming in real time. It’s fast, simple, and works across many application.

This metric calculatio will help you measure this metric in no time.

What Is The Meaning Of DoD, WoW, MoM and YoY Metrics?

Day-over-Day (DoD) growth shows how a number changes from each day to the next.

It is a simple way for short-term comparison, allowing you to see if things like sales, website visits, or customer sign-ups are going up or down compared to the previous week.

DoD growth rate helps to spot very-short-term trends and quickly understand the effect of a new perfomence, promotion, or event.

The main benefit of DoD analysis is speed.

Instead of waiting for weekly, monthly or yearly reports, you can react right away if performance improves or drops.

Similarly Week-over-Week (WoW) growth shows how a number changes from one week to the next.

WoW also gives a fair comparison, since weeks usually follow a similar pattern of weekdays and weekends. This makes WoW useful for checking marketing results, product launches, or audience engagement.

However, the DoD WoW growth rate has limits.

Daily, Weekly updates can be noisy, especially for small businesses or seasonal industries, and results may not reflect long-term progress.

For bigger business decisions, it is also better to check month-over-month or year-over-year growth.

I will explain formula for DoD, WoW similarly you can calculate for MoM and YoY metrics.

How To Calculate Day-over-Day Change

The Day-over-Day Formula
The most common formula for calculating Day-over-Day (WoW) change is:

This formula tells you the percentage increase or decrease compared to the previous day. It is straightforward and works with any metric, such as sales, website traffic, or subscribers.

An alternative version is:

Both formulas give the same result, but the second one emphasizes the growth ratio before converting to a percentage.

Alongside percentage change, businesses sometimes track absolute change (this week – last week) and growth factor (this week ÷ last week).

These extra views help understand both the scale and the pace of growth.

How To Calculate Week-Over-Week Change

Similar to Day-over-Day
The Week-Over-Week Formula
The most common formula for calculating Week-over-Week (WoW) change is:

This formula tells you the percentage increase or decrease compared to the previous week. It is straightforward and works with any metric, such as sales, website traffic, or subscribers.

Both formulas give the same result, but the second one emphasizes the growth ratio before converting to a percentage.

Alongside percentage change, businesses sometimes track absolute change (this week – last week) and growth factor (this week ÷ last week).

These extra views help understand both the scale and the pace of growth.

Example

Example 1:

Imagine an webiste that had performance of 70 the previous week. After fixing performance issues performace went up 80 this week. Using the first formula:

DoD % Change = ((80−70) / 70 )* 100= (10 /70)*100 = 0.14285 * 100 = 14.285%
This means the webiste achieved a 14.285% Day-over-Day increase in performance, showing the fix improved the performance.

Example 2: Finding Growth ratio

DoD % Change = ((80/ 70 )- 1)= (80 /70) = 1.1428 - 1= 0.1428
This means the webiste achieved a Growth of x1.1428 Day-over-Day increase in performance, showing the fix improved the performance.