Shares of Microsoft and Salesforce.com Inc. are posting losses Tuesday afternoon, propelling the Dow Jones Industrial Average selloff. Shares of Microsoft MSFT, -3.62% and Salesforce.com Inc. CRM, -2.65% have contributed to the blue-chip gauge’s intraday decline, as the Dow DJIA, -1.63% was most recently trading 576 points (1.7%) lower. Microsoft’s shares are off $9.75 (3.3%) while those of Salesforce.com Inc. are down $7.72, or 2.8%, combining for an approximately 115-point drag on the Dow. Other components contributing significantly to the decline include Goldman Sachs GS, -2.58%, Boeing BA, -2.57%, and Apple Inc. AAPL, -2.38%. A $1 move in any one of the 30 components of the Dow equates to a 6.58-point swing.