Last month, you were able to purchase 8 computers. By the middle of the current month, you were able to purchase 8 more computers than last month. By the end of the current month you were only able to purchase 2 additional computers. What was the percentage increase from last month's purchases to the end of this month's purchases?

By the middle of the current month, 8 more computers than the last month were purchased. This means, total number of computers purchased by middle of current month = 8 + 8 = 16

Number of computers purchased by end of current month = 2

So,

Total computers purchased by current month = 16 + 2 = 18

We have to find the percentage increase in the number of computers from last month's purchases to the end of this month's purchases. The formula for percentage change is:

[tex]\text{Percentage Change}=\frac{\text{New Value - Original Value}}{\text{Original Value}} \times 100\%[/tex]

Here, Original Value is the number of computers from last month and New Value is the number of computers from current month. Using the values in the formula, we get:

[tex]\text{Percentage Change}=\frac{18-8}{8} \times 100\% = 125\%[/tex]

Thus, there was a 125% increase from last month's purchases to the end of this month's purchases