Download error, passing the 100% mark
Error code 961 appears when there is a misconfiguration of system files on the Google Play store. It is happening when downloading,
updating and upgrading mobile applications for
Android Operating System.
To fix this issue, follow these steps.


Go to settings
Apps
All and clear the cache
Clear data for google play store
Go to settings
Accounts and sync
Remove all the synced accounts
Open google play and register your id again


If this won`t work, you could do reset for Google
Play Store. Here how it do.


Go to Setting
Click Application or Apps
Click Manage Application
You will see downloaded, running, all, on SD
card.
Select All
Choose Google service frame
Choose force stop,
Clear data.
Restart.


This will reset the Google Play Store and you can
start downloading Apps as normal again.