How to Change the Scroll Direction on a Mac

Changing Trackpad Scroll Direction

1. 
   Click the Apple menu.
2. 
   Click System Preferences. If a submenu opens instead of System Preferences, click the Show All button at the top of the window.
3. 
   Click Trackpad.
4. 
   Click the Scroll & Zoom tab.
5. 
   Click the Scroll direction: Natural checkbox. When this is enabled, swiping down on the trackpad with two fingers will scroll up and vice-versa. When this is disabled, swiping down will scroll down.^[1]