# One of the largest US stock market rises occurred on March 15, 1933. On this day, the Dow Jones Industrial Average opened at 53.84 points and closed at 62.10 points. What was the approximate percent of increase?

Dec 22, 2017

See a solution process below:

#### Explanation:

The formula for calculating the percent change in a value between two points in time is:

$p = \frac{N - O}{O} \cdot 100$

Where:

$p$ is the percent change - what we are solving for in this problem.

$N$ is the New Value - 62.10 in this problem.

$O$ is the Old Value - 53.84 in this problem.

Substituting and solving for $p$ gives:

$p = \frac{62.10 - 53.84}{53.84} \cdot 100$

$p = \frac{8.26}{53.84} \cdot 100$

$p = \frac{826}{53.84}$

$p = 15$ rounded to the nearest integer.

The increase for Dow Jones Industrial Average on March 15, 1933 was approximately 15%