The number of meters decreased by 25.6 is 84.3 meters.

x - 25.6 = 84.3

x-25.6 = 84.3

To find the original number of meters before it decreased by 25.6, you need to perform the reverse operation. To do this, you can use the equation:

Original number of meters - 25.6 = 84.3

To isolate the original number of meters, you can add 25.6 to both sides of the equation:

Original number of meters - 25.6 + 25.6 = 84.3 + 25.6

Simplifying the equation, you get:

Original number of meters = 109.9

Therefore, the original number of meters before it decreased by 25.6 is 109.9 meters.