Can you change the percentage increase in stats? How is this done? Please provide more details.
Here's what you do. You get an item with a bonus at the start, acquire it by defeating monsters, or buy an artifact that provides a bonus to attack. Then, you develop your character for two weeks, without equipping any artifacts that boost other stats. After two weeks, you remove all the artifacts and discover that the attack stat is higher than the spell power stat, meaning that the attack was increased more often than the spell power during leveling.
Alternatively, you can restart the game until you receive the Helm of Chaos as a starting bonus (with stats 1-0-3-4) and play for two weeks, without equipping any artifacts that boost other stats. Then, you remove all the artifacts and find that the knowledge stat is higher than the attack stat, and sometimes even higher than or equal to the spell power.
That's the whole technique.
Творят настолько черные дела,
Что до таких блистательных идей
Не вдруг дойдет и записной Злодей
Темный адепт клана GODS