No change to configuration, but before 9.2.5 I was at 81602 / 135645 and now ATT says 79536 / 134136.

The numbers change a lot due to clean up and new things being added in new patches. One major change in the last version is that 'cost' groups no longer count towards progress once their 'purchase' has been collected. Meaning the total will decrease when those are no longer necessary for you to obtain.

Also if you are using Account mode, there was an issue with Account-Wide Achievement collection across factions in ATT 2.8.0, so likely you were missing some % there as well. That will be fixed in next release.