what is decimal form of 1\4%

If you mean 1/4%:

1/4% means 1/4 of 1%

which is 1/4 of 0.01

which is 1/4 x 0.01

which is 0.25 x 0.01   =   0.0025

The answer is 25% 

You do 1 divided by 4 which is 0.0025then you mave your decimal over 

4 spaces which will give you 25%

Or just think of a a dollar

1/4-25%

2/4- 50%

3/4- 75%

4/4-100%

.25 (zero and twenty-five hunderedths)