The percent of change in that price of a cell phone from 2000 to today is 86.05%
The given parameters are:
Initial Price = $129
New Price = $240
The percentage change is then calculated as:
\(\% Change = \frac{Final - Initial}{Inital} * 100\%\)
So, we have:
\(\% Change = \frac{240- 129}{129} * 100\%\)
\(\% Change = \frac{111}{129} * 100\%\)
\(\% Change = 86.05\%\)
Hence, the percent of change in that price of a cell phone from 2000 to today is 86.05%
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