The details of the pie charts are shown as follows:

The first pie chart depicts the percentage of U.S. businesses. 74 percent are "Sole Proprietorships," 17 percent are "Corporations," and 9 percent are "Partnerships."

The second pie chart shows the percentage of sales revenues generated. 81 percent is generated by the "Corporations" sector. 15 percent comes from "Partnerships," and 4 percent is generated by "Sole Proprietorships."

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