Question regarding [Skill Name Here]: Reinforce hyper skills

Its 2% PER orb.So it means that 10+2=12 and 12*5=60 so total of 60% dmg boost from combo and hyper

im not sure i understand that math

i thought it would go like this:

10% damage per orb, add hyper so its now 12% per orb

12% x 10 = 120% more damage

and for the boss hyper:

2% x 10 = 20% boss damage, added to 120% to all damage from hyper combo, so 140% damage when attacking bosses

or am i doing this wrong?