We cut the unemployment rate from 10 percent to 4.9 percent.
On the Anniversary of his Presidential Campaign Announcement, the President Delivers Remarks to the…
The Obama White House

Numerically, this is correct. The unemployment rate peaked at 10.0 percent in October 2009. As of January 2016, it was at 4.9 percent. Certainly the Obama administration played a role and can take some credit, but presidents are not all-powerful in job creation, so claims of credit should be taken with a grain of salt.