How do you calculate the overall percentage of campaign-related purchases?

• A. Add the number of campaign-related purchases and divide by the total purchases, then multiply by 100
• B. Divide total purchases by campaign purchases
• C. Multiply campaign purchases by 100
• D. Subtract campaign purchases from total and multiply by 100

Answer: (A)

To express the portion of all purchases that came from the campaign as a percentage, you divide the campaign-related purchases by the total purchases and multiply by 100. This converts the share into a percent that shows how much of the total purchases were driven by the campaign.

For example, if there are 40 campaign purchases out of 200 total purchases, the percentage is (40 ÷ 200) × 100 = 20%.

Dividing total purchases by campaign purchases would give an inverse ratio, which isn’t a percentage of all purchases. Multiplying the campaign count by 100 just scales the raw count, not its share of the total. Subtracting from total and multiplying by 100 also doesn’t represent the proportion of the total.