Hello New,
a delay is always associated to an interface to see it use show interface x/y
EIGRP will consider the delay expressed in tens of microseconds on all the path
256 * (sum of delays in 10s of microseconds)
there's no percentage concept in this it is just a question of the unity of measure used in the metric calculation.
in the show interface x/y delay is expressed in microseconds so 2000 microseconds become 200 10s of microseconds
Hope to help
Giuseppe