Sales report from dashboards--->business overview is coming incorrectly... negative figures are considered as positive.

Hello finance-sciencea, 

Welcome to the QuickBooks Community. It's important you're able to navigate the program without running into issues such as the one you've described above. Don't worry, I'll be glad to share helpful tips that can help you get back on track in a timely fashion. 

To get started, it's vital to make sure you're using one of our supported browser to access and use QuickBooks as this could be a cause to the issue you've described. Here's a list of: System requirements for QuickBooks Online. In case you're using a supported browser and you're still experiencing this issue, I recommend troubleshooting this by clearing cache and cookies on your browser. Clearing cache and cookies helps with fixing most browser issues. You can do this by following the steps in this article: Clear Cache and Cookies.

Give this a try and let me know what happens. I'll be here in case you have other questions.