you estimate a building is 20 meters tall but it actually 23 meters what is the difference in percent?

(23-20)/23 * 100

To calculate the difference in percent between the estimated height and the actual height of the building, you can use the following formula:

Difference in percent = ((Actual height - Estimated height) / Estimated height) * 100

Let's substitute the values into the formula:

Estimated height = 20 meters
Actual height = 23 meters

Difference in percent = ((23 - 20) / 20) * 100
Difference in percent = (3 / 20) * 100
Difference in percent = 0.15 * 100
Difference in percent = 15%

Therefore, the difference between the estimated height and the actual height of the building is 15%.