See the solutions to these problems just after the percentage calculator below.

Here are the solutions to the questions stated above:

Always use this formula to find a percentage:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{8.6} / _{100} = ^{Part} / _{140}

Cross multiply:

8.6 x 140 = 100 x Part, or

1204 = 100 x Part

Now, divide by 100 and get the answer:

Part = ^{1204} / _{100} = 12.04

Use again the same percentage formula:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{%} / _{100} = ^{8.6} / _{140}

Cross multiply:

% x 140 = 8.6 x 100

Divide by 140 and get the percentage:

% = ^{8.6 x 100} / _{140} = 6.1428571428571%