Final answer:
Expressing adjustments in percentages allows for easier comparison and understanding of proportions, while expressing adjustments in dollar figures can make it more difficult to determine the proportion and change.
Step-by-step explanation:
When comparing adjustments in dollar figures versus percentages, there is a clear difference in terms of ease of understanding. Expressing adjustments in percentages allows for easier comparison and understanding of proportions. For example, if you see two index numbers like 107 and 110, you can instantly tell that the rate of inflation between the two years is approximately 3%. On the other hand, expressing adjustments in dollar figures can make it more difficult to determine the proportion and change. For instance, looking at the numbers $19,493.62 and $20,040.17, it may not be immediately clear that the change is about 3%.