1.29 % is converted to decimal as 0.0129
Solution:
"Percent" means "per 100" or "over 100"
To convert 1.29% to a decimal rewrite 1.29 percent in terms of per 100 or over 100
Given percentage is 1.29 %
1.29 % = 1.29 over 100

1.29 over 100 is the same as 1.29 divided by 100
Completing the division we get:

Thus the given 1.29 % is converted to decimal as 0.0129