546.5 is what percent of 678 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 678 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 678, so we can write it down as 100%=678.
4. We know, that x% equals 546.5 of the output value, so we can write it down as x%=546.5.
5. Now we have two simple equations:
1) 100%=678
2) x%=546.5
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=678/546.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 546.5 is what percent of 678

100%/x%=678/546.5
(100/x)*x=(678/546.5)*x       - we multiply both sides of the equation by x
100=1.2406221408966*x       - we divide both sides of the equation by (1.2406221408966) to get x
100/1.2406221408966=x
80.604719764012=x
x=80.604719764012

now we have:
546.5 is 80.604719764012% of 678