Activity Monitor is Missing %CPU

In addition to what dialabrain said: you can pick and choose which columns to show, and in what order.

Control-click to select or deselect columns; click and drag to reorder.

Delete ~/Library/Preferences/com.apple.ActivityMonitor.plist then restart Activity Monitor.

Check to see if there's a scroll bar along the bottom. If there is one, move it to the right side of the window. you might find what you're looking for.