The information about organizations found at CharityCheck101.org comes directly from the public IRS datafiles.
The IRS updates the public datafiles after an organization files a new Form 990 or other new information with the IRS. There is a time lag between the organization filing and the updating of the public IRS datafiles.
If you need to change information, you might contact the IRS Exempt Organizations professionals directly.
But probably the best way to get the information updated is to include the new information in all future 990 and other filings your organization makes with the IRS.
Once the IRS publicly posts the changes, we will follow their lead.