the percentage on grade report page

I am trying to figure out what the percentage thing means on the report page? its under the letter grade in the foods section...can someone tell me?? thanks

Do you mean the pie chart in the nutrition report?

no its the percent concentration part...i dont understand what that means

Any percentages are usually benchmarked against a typical daily intake or, in the case of vitamins, the RDA. 

so when it says 96% concentration...what does that mean??

I've never seen the word 'concentration'...  can you give an example?    However if something has a certain number of grammes of fat and then the number '15%' that means you're getting 15% of the typical recommended daily intake of fat from that food.