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on Monday, October 19th, 1987, the Dawn Jones Industrial Average dropped 508 points to 1,739 points at the end of the day. What was the percent change (to the nearest percent ) in this stock index on that day?

Answer :

If it dropped 508 points to 1,739 points, it means the initial points were 2247.

To find the percent change, we just have to divide

[tex]\frac{508}{2247}=0.226[/tex]

Then, we multiply by 100

[tex]\text{0}.226\cdot100=22.6[/tex]

Hence, it dropped 22.6%.

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