To find the percent decrease in the number of fish caught, we need to compare the difference between the number of fish caught yesterday and today to the original number of fish caught yesterday.
First, let's calculate the difference in the number of fish caught:
2,300 fish (yesterday) - 2,165 fish (today) = 135 fish decrease
Next, we need to calculate the percent decrease. To do this, we will divide the decrease in the number of fish by the original number of fish caught yesterday, and then multiply by 100 to express it as a percentage:
(135 fish decrease / 2,300 fish) * 100 = 5.87% decrease
Therefore, the percent decrease in the number of fish caught is approximately 5.87%.