I don't know what a comparison statement is, but
8 slices of bread:4 eggs
For every 8 slices of bread, there are 4 eggs. Sound familiar?
THIS IS A RATIO
8:4 simplified = 4:2 = 2:1 = 1:1/2
The ratio of bread:eggs is 1:1/2
1/2 egg is used for each slice of bread.