An EOU means Export Only Units. An 100% EOU is a establishment which is indulged only in export activities. ie. it is not into manufacturing, importing etc.
export oriented unit
Percent means out of 100 so 93 out of 100 as a percent is 93%
Percent means out of 100 so 2.5% of 100 is 2.5
24/100 is 24% ! The word 'percent' means 'of 100'
7 percent or 7% means 7 out of a 100