Probably no family of statistical measures is more prone to honest misuses and wanton abuses than that of the percent. In this article we survey a variety of ways that percents misinform, mislead and misdirect. Improper comparisons and faulty conclusions about ratios result from statistical ignorance. H. G. Wells once said: “Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write. “Wells’ prediction was correct.