Final answer:
Shawna's percent of change in bike sales is 25%.
Step-by-step explanation:
To find Shawna's percent of change in bike sales, we need to calculate the difference between the two years and express it as a percentage of the original value.
The difference in bike sales is 220 - 165 = 55 bikes.
To express this as a percentage of the original value, we divide the difference by the original value and multiply by 100: (55 / 220) * 100 = 25%. To calculate Shawna's percent change in bike sales from last year to this year, we use the formula for percent change, which is (New Value - Old Value) ÷ Old Value × 100%. Last year Shawna sold 220 bikes, and this year she sold 165 bikes. Here is how you can calculate it:
The change in the number of bikes sold is 165 - 220 = -55. To find the percent change, we divide this by the original number of bikes sold, which is 220:
-55 ÷ 220 = -0.25
Now, convert this to a percent:
-0.25 × 100% = -25%
So, Shawna's percent of change in bike sales is -25%, which indicates a decrease in sales over the past year.