Check out this site for current percentages of CO2:
http://co2now.org/images/stories/dat...-noaa-esrl.pdf
Your high percentage of approx .3 is inaccurate. It is now almost .4 and is far, far beyond even the highest previous record for CO2 from the past 600,000 years. With the developing nations of China and India becoming developed nations it will only get worse this century unless something is done.
You can put your head in the sand and find an unreliable website to make you feel better, or you can see it as it really is even though it won't make you happy. That is the only way course changes ever happen.