I posted a spreadsheet to help calculate percentage of change problems for GLE #10. GLE #10 is "Analyze the population characteristics and other demographic information about the United States and Louisiana, including rates of increase/decrease for demographic variables." The spreadsheet is available in the iDisk under 8th Grade Social Studies/Geography/gle10/gle10calculator.xls. You may open it in Excel or OpenOffice. You may also download the file here:
GLE #10 Calculator