To find the probability that John makes all three free throws, we can use the multiplication rule for independent events.
Since John's free throw shooting percentage is 80%, we can express this as a decimal:
\[ P(\text{make a free throw}) = 0.80 \]
Since each free throw is an independent event, we can multiply the probabilities of making each individual free throw together:
\[ P(\text{making all three free throws}) = P(\text{make first}) \times P(\text{make second}) \times P(\text{make third}) \]
This can be calculated as:
\[ P(\text{making all three free throws}) = 0.80 \times 0.80 \times 0.80 = 0.80^3 \]
Now we calculate \(0.80^3\):
\[ 0.80^3 = 0.512 \]
To express this as a percentage, we multiply by 100:
\[ 0.512 \times 100 = 51.2% \]
Therefore, the percent chance that John makes all three free throws is 51.2%.