# Use Matrix Share mode

This mode is only available when a matrix is active; it is not available in Summary view.

Matrix Share mode takes your existing matrix and displays the data as a percentage, with each row summing to 100 per cent. It is a useful tool where ratios are important, for example, if you want to compare the ratio of Product X to Product Y.

The following example uses Matrix Share mode** **to identify which customers have bought downlights but not transformers, both this year and last year. Suppose you know that typically one transformer is required to run two downlights. That is, a 33.3% / 66.6% split, based on quantity. You want to identify the customers that are outside that ratio, in other words, which customers are buying fewer transformers than expected.

Start with an existing a matrix (this example continues with the example in the Compare data with Matrix mode page).

Select

**Measures > Quantity**and remove the**Local Value**measure.Select

**Mode > Matrix Share**. The grid updates to display the quantity data rather than the local values, and the percentage split for each customer, for each item (the columns sum to 100%).(Optional) Go back to your regular matrix: click

**Mode > Matrix**.