The decrease in injuries can be calculated using the formula:
Percent decrease = [(Initial amount - Final amount) / Initial amount] * 100
Here, the initial amount of injuries at the end of 2020 was 16, and the final amount at the start of 2021 was 0.
Percent decrease = [(16 - 0) / 16] * 100
Percent decrease = (16 / 16) * 100
Percent decrease = 1 * 100
Percent decrease = 100%
Therefore, the percent decrease in injuries from the end of 2020 to the start of 2021 for the cricket team was 100%.