Final answer:
The percentage decline of the NASDAQ stock market bubble from its peak of 3,820 to 2,270 two and a half years later is 40.58%.
Step-by-step explanation:
The question asks us to calculate the percentage decline of the NASDAQ stock market bubble from its peak value to its value two and a half years later. To find this, we subtract the later value from the peak value, divide by the peak value, and then multiply by 100 to get the percentage.
Percentage decline = ((Peak Value - Later Value) / Peak Value) × 100
Let's plug in the given values:
Percentage decline = ((3,820 - 2,270) / 3,820) × 100
Percentage decline = (1,550 / 3,820) × 100
Percentage decline = 0.4058 × 100
Percentage decline = 40.58%
Therefore, the NASDAQ stock market bubble experienced a 40.58% decline from its peak at 3,820 to 2,270 two and a half years later.