Having chosen an occupation, the player multiplies the investigator’s EDU and allocates the resulting total as percentiles among those skills listed for the occupation. All the skills do not need to have points given to them, but points undistributed are lost. See the Skills List.
Add to these allotted points those pre-printed on the investigator sheet alongside the skills. For instance, alloting 25 percentiles to Throw, we see 25% printed beside the skill: the player should total the two numbers and write in 50% as the current amount for the skill.
No skill is ever higher than 99%, the Keeper may restrict this as well. Cthulhu Mythos excepted, a higher skill percentage is always better.