The given graph shows the distinction in the average American diet for two specific years: 1990 and 2005.
Overall, the percentage of protein intake during these two distinct years prevailed consistency, while the proportion of sugar, fat, and starch oscillated relative to this time.
Initially, the biggest adjustment that can be precisely seen between the two pie charts is an increase of the starch percentage with 22% in 1990 and 43% in 2005. In contrast, in 1990, the average American's dietary fat consumption was 42% until 2005 there was a  downward tendency to only 30%. Be equivalent to fat, in the US diet, the amount of sugar has plunged from 24% in 1990 to 15% in 2005.
Otherwise, the percentage of protein plateaud with stopping at only 12% of the American diet in both two years. 
The  
given
 graph  
shows
 the distinction in the average American diet for two specific years: 1990 and 2005. 
Overall
, the percentage of protein intake during these two distinct years prevailed consistency, while the proportion of sugar,  
fat
, and starch oscillated relative to this time. 
Initially
, the biggest adjustment that can be  
precisely
  seen
 between the two pie charts is an increase of the starch percentage with 22% in 1990 and 43% in 2005.  
In contrast
, in 1990, the average American's dietary  
fat
 consumption was 42% until 2005 there was a 
  
downward tendency to  
only
 30%. Be equivalent to  
fat
, in the US diet, the amount of sugar has plunged from 24% in 1990 to 15% in 2005. 
Otherwise
, the percentage of protein  
plateaud
 with stopping at  
only
 12% of the American diet in both two years.