Final answer:
The percent decrease from 500 to 450 is 10%.
Step-by-step explanation:
To find the percent decrease, we divide the difference between the two quantities by the initial quantity and then multiply by 100. In this case, the initial quantity is 500 and the final quantity is 450, so the decrease is 500 - 450 = 50.
The percent decrease is (50/500) x 100 = 10%. Therefore, 450 is a 10% decrease compared to 500.
Another way to think about it is to consider the percent decrease as the new value as a percentage of the original value. In this case, 450 is 90% of 500, which means it is 10% less than 500.
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