The search queries dashboard in Google Webmaster tools has recently been updated! Google Webmaster Tools is a web service by Google for webmasters. It allows webmasters to check indexing status and optimize visibility of their websites.
Yesterday the dashboard format had been improved and it now shows change percentages (vs. previous period) for all key metrics that are available. And because change values are displayed in appropriate colours (red if decreasing, green if increasing), it gives you an instant visual guide for what to look at. You can quickly see what keywords have changed significantly - whether relative to impressions (increasing customer interest?), clicks, clickthrough rate (CTR) or average position (are your SEO efforts paying off?).
To make life easier, you can order search queries by change percentage for any of the displayed metrics to quickly find out those terms with a high increase or those which are decreasing.