export the Power store database to an SQL File.
use the SQL file to import the tables data to the new MySQL Server.
transfer the Power Store files to the new server using the same folder structure. for example, if power store exists at:
domain1.com/store
make sure to upload the power store files to the same /store subfolder so it exists on the new server as:
domain2.com/store
then you will need to update the connection file in the connections directory to point to the new hosts mysql server.