Image source: Convention on Biological Diversity
Information is Beautiful posted an infographic for the data on diversity released by a bevy of technology companies recently. The infographic makes the comparison across industries, within industries, and to the baseline (general population) easy. As the chart shows, the major tech companies are pretty similar in their representation of women, whites, and minorities, though they are behind some of their non-tech counterparts when it comes to employing women (compare to "Top 50 U.S. Companies"), Latinos, and African-Americans (especially the socially-oriented tech companies). Further, most tech companies also have a higher percentage of Asian employees, so, while some groups may be underrepresented within their employee pool, they are employing a relatively higher percentage of other minorities. To be clear, this comparison is just descriptive - it's not clear from the infographic or the accompanying write-up whether there are statistically significant differences in tech vs. non-tech companies and employee profiles. I also have no comment on whether this employee makeup is "right" or "wrong," though I do applaud these companies for releasing the data and information necessary to compile this visualization and for making an effort to be more transparent.
Image source: Information is Beautiful