Category Mix Percent Formula
How apparel merchandisers calculate category mix percent and why mix drift is the earliest signal of assortment misalignment.
What Category Mix Percent measures
Category mix percent is each category's share of total sales. Read against plan, it is the earliest signal of whether the assortment is shaping the business the way leadership intended.
Category Mix % = Category Sales ÷ Total Sales × 100Worked apparel example
A DTC brand: Dresses $280K, Tops $320K, Bottoms $260K, Outerwear $140K — total $1.0M.
- Dresses = 28.0% (plan 30%)
- Tops = 32.0% (plan 28%)
- Bottoms = 26.0% (plan 24%)
- Outerwear = 14.0% (plan 18%)
Tops and Bottoms are running hot; Outerwear is running cold. If the plan depended on Outerwear driving Q4 margin, that signal surfaces six weeks before the markdown decision would otherwise land.
This category is 28.0% of the mix. Compare to last year's same-period mix and to the plan — drift either direction should be explained.
Failure modes we see
Mix reviewed at hindsight only. Category mix drift is treated as a post-season observation. Corrective action gets applied to next season's plan — but only after markdowns have already been taken on the category that over-ran.
How RetailNorthstar handles category mix
Mix runs live against plan at department, class, and sub-class. Drift triggers a flag early enough to re-balance open receipts, reallocate inventory, or re-weight marketing spend.
Related formulas
- Sell-Through Rate — what's driving mix drift at the style level
- Plan vs Actual Variance — the full-period variance view
- Comparable Store Sales — the same lens, YoY
See live category mix drift vs plan — flagged in time to correct.
Book a Demo →