Reverse numbers and characters in worksheet

I recently opened a new worksheet and parts of the worksheet are reversed and I cannot get back to the normal settings. As you can see from the attached screen shot (Excel) it's reversed the numbers on the extreme left and it only seems to affect some of the lines. On screen shot Excel 2 you can see the numbers are reversed and out of order. I've tried to open pre-made worksheets like 'Make a List" and it's  reversed as well. Not only is the numbering system reversed but the contents in the individual cells are reversed.  I can't find any command that puts things back to normal.
Any advice would be greatly appreciated. David