To find the percent of decrease from 80 to 60, you can use the following formula:
\[ \text{Percent Decrease} = \left( \frac{\text{Original Value} - \text{New Value}}{\text{Original Value}} \right) \times 100 \]
In this case, the original value is 80 and the new value is 60. Plugging in the numbers:
\[ \text{Percent Decrease} = \left( \frac{80 - 60}{80} \right) \times 100 = \left( \frac{20}{80} \right) \times 100 \]
Calculating the fraction:
\[ \frac{20}{80} = 0.25 \]
Now multiply by 100 to convert to a percentage:
\[ 0.25 \times 100 = 25% \]
Thus, the percent of decrease from 80 to 60 is 25% decrease.
So, the correct answer is: 25% decrease.