U.S. physical game sales of "Destiny 2" declined more than 50 percent in the month of September versus the 2014 release of "Destiny," according to NPD sell-through data sourced by three Wall Street analyst reports.
Destiny 1 sold <2.7 million retail. This would put Destiny 2 retail at <1.35 million.
Credit goes to Welfare for the numbers. From NeoGAF