First, you add 8 and 6 which will be 14. Since it's asking for the first four, it would be 4 over 14.
You can reduce that which is always a good idea and it comes out to be 2 over 7. That because you would divide both the top and bottom (like usual) by 2 each.
If you would want it as a percent, you would turn it into a decimal first. The decimal would be .02857. That's of course if you divide 2 and 7 like normal.
From there you would move the decimal point over two places making it 28.57 percent.
Hope this helps!!