That is exactly it: there are two numbers to be manually updated in the Progress section
[//tools.wmflabs.org/dplbot/disambig_links.php?limit=1000&offset;=0 top 1000 disambiguation pages] as of August 31, 2015, out of a total of 8,067 links, approximately 6,428 have currently been fixed.

{{Progress bar|6428|total=8067|width=60%}}

which renders as

top 1000 disambiguation pages as of August 31, 2015, out of a total of 8,067 links, approximately 6,428 have currently been fixed.