Final answer:
The percent of decrease from 47.2 to 20.4 is 56.8%.
Step-by-step explanation:
To find the percent of decrease from 47.2 to 20.4, you need to calculate the difference between the two numbers and then divide it by the original number. The formula for percent decrease is:
Percent decrease = ((original value - new value) / original value) * 100
Using this formula, the percent of decrease from 47.2 to 20.4 is:
((47.2 - 20.4) / 47.2) * 100 = 56.78%
Rounding to the nearest tenth of a percent, the percent of decrease is 56.8%.
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