To find the percentage increase between two values, you need to calculate the difference, divide it by the original value, and then multiply by 100. Here's a breakdown:
Understanding Percentage Increase
Percentage increase measures how much a value has grown relative to its original amount. This is useful in various fields, including finance, sales, and statistics.
Formula for Percentage Increase
The general formula for finding percentage increase is:
*(New Value - Old Value) / Old Value 100**
Applying the Formula
- Find the Difference: Subtract the old value from the new value. This tells you the amount of the increase.
- Divide by the Old Value: Take the difference you calculated in step 1 and divide it by the original (old) value.
- Multiply by 100: Multiply the result from step 2 by 100 to express the increase as a percentage.
Example: Calculating Price Increase
Let's say you are tracking a price increase. According to the provided reference, you would use the following method:
-
Suppose the old price of an item was $20, and the new price is $25.
- Difference: $25 - $20 = $5
- Divide by Old Price: $5 / $20 = 0.25
- Multiply by 100: 0.25 * 100 = 25%
Therefore, the price increased by 25%.
Table: Percentage Increase Calculations
| Scenario | Old Value | New Value | Calculation | Percentage Increase |
|---|---|---|---|---|
| Price | $20 | $25 | ($25 - $20) / $20 * 100 | 25% |
| Sales | 100 | 120 | (120 - 100) / 100 * 100 | 20% |
| Website Visits | 500 | 600 | (600 - 500) / 500 * 100 | 20% |
Handling Percentage Decrease
If a value decreases, the formula is slightly modified:
*(Old Value - New Value) / Old Value 100**
For example, if a price decreased from $25 to $20:
- Difference: $25 - $20 = $5
- Divide by Old Price: $5 / $25 = 0.20
- Multiply by 100: 0.20 * 100 = 20%
Therefore, the price decreased by 20%.
Summary
In summary, to calculate the average percentage increase:
- Subtract the original value from the new value.
- Divide that result by the original value.
- Multiply that result by 100. This yields the percentage increase.
