678.75 is what percent of 830 - 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 830 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 830, so we can write it down as 100%=830.
4. We know, that x% equals 678.75 of the output value, so we can write it down as x%=678.75.
5. Now we have two simple equations:
1) 100%=830
2) x%=678.75
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%=830/678.75
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 678.75 is what percent of 830

100%/x%=830/678.75
(100/x)*x=(830/678.75)*x       - we multiply both sides of the equation by x
100=1.2228360957643*x       - we divide both sides of the equation by (1.2228360957643) to get x
100/1.2228360957643=x
81.777108433735=x
x=81.777108433735

now we have:
678.75 is 81.777108433735% of 830