Final answer:
The percent of decrease from 39 to 0 is 100%.
Step-by-step explanation:
To find the percent of decrease from 39 to 0, we need to calculate the difference between the two numbers and then express it as a percentage of the original number. The formula for percent decrease is: Percent decrease = ((original number - new number) / original number) * 100. Applying this formula to the given numbers: ((39 - 0) / 39) * 100 = 100%. Therefore, the percent of decrease from 39 to 0 is 100%.
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