The minimum daily values (MDVs) for certain foods are given. They are based on

a 2,000 calorie per day diet. Find decimal and fractional notation for the percent
notation in each sentence.
1/2 cup of Campbells’ New England clam chowderprovides 6% of the MDV of iron

In this case you look for the number value. Here it is 6%. Convert percent to a decimal by dividing by 100 (just move the decimal two places to the left.) 6% = 0.06. As a fraction this is 6/100 or 3/50.