819.5 is what percent of 920 - 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 920 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 920, so we can write it down as 100%=920.
4. We know, that x% equals 819.5 of the output value, so we can write it down as x%=819.5.
5. Now we have two simple equations:
1) 100%=920
2) x%=819.5
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%=920/819.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 819.5 is what percent of 920

100%/x%=920/819.5
(100/x)*x=(920/819.5)*x       - we multiply both sides of the equation by x
100=1.1226357535082*x       - we divide both sides of the equation by (1.1226357535082) to get x
100/1.1226357535082=x
89.076086956522=x
x=89.076086956522

now we have:
819.5 is 89.076086956522% of 920