Froot Loops have 25.3g of net digestible carbs (total carbs minus fiber) per 30g serving. That's 84%.

http://nutritiondata.self.com/facts/breakfast-cereals/1532/2

I'm fairly certain your link only includes added sugars which is not the total number of digestible sugars (digestible carbs = digestible sugars). Unfortunately, most people have the misconception that carbs from "natural sources" (fruits, starches, grains, etc.) don't effect your blood sugar the same as added sugars, but that is incorrect.