Convert each part of the Ratio to Percentage:

6:3:1

The sum of ratio = 6+3+1 = 10

First part = $\frac{6}{10}$

Second part = $\frac{3}{10}$

Third part = $\frac{1}{10}$

Percentage of first part =$\frac{6}{10}\times 100$= 60%

Percentage of second part =$\frac{3}{10}\times 100$= 30%

Percentage of third part =$\frac{1}{10}\times 100$= 10%.