Weekoverweek

Weekoverweek, often written as week-over-week or abbreviated WoW, is a comparative metric that measures change in a value from one week to the next. It is commonly used in business, finance, marketing, and operations to monitor short-term trends in sales, traffic, revenue, customer activity, and other key performance indicators.

The standard calculation expresses percentage change: subtract the previous week’s value from the current week’s value, divide the result by the previous week’s value, and multiply by 100. For example, if weekly sales rise from 100 units to 110 units, the weekoverweek change is +10 percent.

Weekoverweek analysis highlights recent momentum and can detect emerging improvements or declines faster than month-over-month comparisons. It is frequently displayed in dashboards, reports, and charts alongside absolute values and longer-term metrics to provide context. Variations include comparing the same weekday across consecutive weeks or using rolling seven-day averages to reduce noise.

Limitations include sensitivity to seasonal patterns, holidays, one-time events, and small sample sizes, which can make short-term fluctuations misleading. Interpretation improves when combined with statistical significance testing, smoothing techniques, and complementary measures such as year-over-year or month-over-month comparisons. In practice, weekoverweek is a useful short-term monitoring tool but should be considered as part of a broader analytical framework.