![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Original: 35 computers
\New: 32 computers
\Since the original computers is greater than the new computers, this is a percent of decrease.
\The amount of change = New computers– Original computers.
\The amount of change = ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7046cae3e68d8afb514bc1230032ec4e.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Let r be the percentage of increase.
\Use the original number, 35 as the base.
\The percent proportion is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e3060d71f6117719643377d856e813f0.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step3.JPG\")
To solve for r, first find the cross products.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b89402a127fd225a3553a6de304f3892.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=edddb04da966b6ed202b41e653e3a85b.png\")
Divide each side by 35.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9cbc77615299aa67dc1e4f7e38e2d91c.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=052b85a06e115f7b5ceecf934ed9c3f8.png\")
The percentage of decrease by 9%.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The percent of change is a percent of decrease.The percentage of decrease by 9%.