Behind declines for shares of Visa and Apple Inc., the Dow Jones Industrial Average is in a selloff Monday afternoon. The Dow was most recently trading 363 points, or 1.1%, lower, as shares of Visa and Apple Inc. have contributed to the blue-chip gauge’s intraday decline. Visa’s shares are down $6.91 (3.0%) while those of Apple Inc. have declined $3.86 (2.7%), combining for a roughly 71-point drag on the Dow. Salesforce.com Inc. Microsoft and Goldman Sachs are also contributing significantly to the decline. A $1 move in any of the Dow’s 30 components equates to a 6.58-point swing.