Question

What is the formula to calculate the percent increase between two numbers?

Answer 1

To calculate the percent increase between two numbers, you can use the following formula:

\[
\text{Percent Increase} = \left( \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \right) \times 100
\]

Where:
- **New Value** is the number after the increase.
- **Old Value** is the original number before the increase.

Here's how to do it step-by-step:

1. Subtract the Old Value from the New Value to find the increase.
2. Divide that increase by the Old Value.
3. Multiply the result by 100 to convert it to a percentage.

For example, if the Old Value is 50 and the New Value is 70:

1. Increase = 70 - 50 = 20
2. Divide by Old Value: \( \frac{20}{50} = 0.4 \)
3. Convert to percentage: \( 0.4 \times 100 = 40\% \)

So, the percent increase is 40%.