
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
From 1999 to 2010, over 12 years, the price increase was $150\%$ (i.e., in 1999, an item costing 100 yuan would cost 150 yuan more in 2010 to purchase the same item). If the wages of a company's frontline employees have not changed in these 12 years, calculate the percentage decrease in their wages in terms of purchasing power.

Present the answer in LaTex format: \boxed{Your answer}
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