- The provisional population totals of Census 2011 showed that Nagaland registered a decadal growth rate of -0.58 percent, indicating a decrease in its population from 2001 to 2011. - This negative growth was attributed to various factors, including revisions made after a post-enumeration survey in 2010 that corrected inflated figures from the 2001 census due to issues like multiple counting. - All other states listed (Manipur, Tripura, Sikkim) recorded positive population growth rates during the same period.