It's true that people in business and politics are often obsessed with changes and ignore the levels. However, tracking changes in stock prices and other pertinent figures provides an important indicator of performance and helps investors make decisions. Without the daily changes, investors may not be aware of the current market conditions and could make uninformed decisions. Plus, tracking changes in the market can also indicate whether a company is trending up or down. So, while it may be true that the levels are somewhat more relevant, the delta is an important metric to consider.
