Give each letter of the alphabet it's corresponding number
Like a=1, b=2, c=3, d=4,...etc.
If you add up the letters of the alphabet in the word "Attitude"
this is the result:

A = 1
T = 20
T = 20
I = 9
T = 20
U = 21
D = 4
E = 5
-----
Attitude is 100%