The assumptions are annually 5% increase in rent, no change in car payment, 2% increase in car insurance, and 15% increase in health insurance from 2010 to 2015.
What the bar chart shows you is trend in increasing cost of living over the 6 years that are captured here.
The pie charts show what percentage of the expenditure went into each category and as you see the health insurance increased from 24% to 34% while your rent went down from 47% to 44%, even though it also experienced an increase. Car payment went down as a percentage since it remained constant.
Please respond to this posting and share your thoughts. Use similar model for your work.
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Pie vs Bar Chart.xlsx (31k)

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