The depth was 64 feet. Currently, the depth is 80 feet. The depth increased by 25%
Solution:
Given, The depth was 64 feet.
Currently, the depth is 80 feet.
We have to find by what percent has the depth increased
The percentage increase is given as:

Here original depth = 64
Final depth = 80
Change in depth = final depth - original depth = 80 - 64 = 16
Plugging in values in formula we get,
