When adding new foods to the tracker the first thing you should do is to input the data as per 100g as stated on the packaging. Once this is saved you can then input the amount eaten in grams (eg. 84g) the tracker will then give you the correct nutrition information for that weight. No more having to work it out manually then scrolling through the serving sizes to get to the closest match. Doing this will build up an accurate database and take away the incorrect data that comes up when people custom add their own serving sizes.