Dragged down by declines for shares of Microsoft and Salesforce.com Inc., the Dow Jones Industrial Average is in selloff mode Tuesday morning. The Dow DJIA, -1.64% was most recently trading 489 points lower (-1.4%), as shares of Microsoft MSFT, -3.11% and Salesforce.com Inc. CRM, -2.61% are contributing to the blue-chip gauge’s intraday decline. Microsoft’s shares have fallen $9.23 (3.1%) while those of Salesforce.com Inc. have declined $8.03 (2.9%), combining for an approximately 114-point drag on the Dow. Other components contributing significantly to the decline include Walt Disney DIS, -2.06%, Goldman Sachs GS, -2.47%, and Boeing BA, -2.39%. A $1 move in any one of the 30 components of the benchmark equates to a 6.58-point swing.