Per the sources already linked to on this very thread, China has lost 25 million manufacturing jobs, the U.S. has lost 2.5 million, and Europe, Japan, and every major industrialized economy has each lost manufacturing jobs since 1995.
One theory is that demand has declined (i.e. "innovation" isn't a factor).
My own opinion, however, is that painting robots have replaced painters on assembly lines, welding robots have likewise replaced welders, and similar technological enhancements have replaced manufacturing employees in other areas today just as the introduction of automated farming equipment (e.g. combines, tractors, trucks) caused the massive shift in American agricultural employment 70 years ago (i.e. "innovation" is a factor).