809.55 is what percent of 989.45 - 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 989.45 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 989.45, so we can write it down as 100%=989.45.
4. We know, that x% equals 809.55 of the output value, so we can write it down as x%=809.55.
5. Now we have two simple equations:
1) 100%=989.45
2) x%=809.55
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%=989.45/809.55
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 809.55 is what percent of 989.45

100%/x%=989.45/809.55
(100/x)*x=(989.45/809.55)*x       - we multiply both sides of the equation by x
100=1.2222222222222*x       - we divide both sides of the equation by (1.2222222222222) to get x
100/1.2222222222222=x
81.818181818182=x
x=81.818181818182

now we have:
809.55 is 81.818181818182% of 989.45