Question

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what is the percent of change from 90000 to 900?
59% decrease
59% increase
90% decrease
90% increase
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find what percent one number is of another
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Explanation:

Step1: Identify the formula for percent change

The formula for percent change is $\text{Percent Change} = \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \times 100\%$. Here, the old value is 9000 and the new value is 900.

Step2: Calculate the difference

First, find the difference between the new and old values: $900 - 9000 = -8100$. The negative sign indicates a decrease.

Step3: Apply the formula

Substitute into the formula: $\frac{-8100}{9000} \times 100\%$. Simplify $\frac{-8100}{9000} = -0.9$. Multiply by 100%: $-0.9 \times 100\% = -90\%$. The negative sign means a 90% decrease.

Answer:

90% decrease