you should know the difference between Bounce Rate and Exit Rate.
Bounce Rate is the percentage of one-hit sessions among all sessions. If it is analyzed on the page level, as below, it is calculated as the number of one-page sessions that started from a particular page divided by the total number of sessions that started from this page (called entrances).
Exit Rate tells you how many users left your site from a particular page. The metric tells you what the percentage of sessions that actually ended on this page is.