673.5 is what percent of 780 - 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 780 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 780, so we can write it down as 100%=780.
4. We know, that x% equals 673.5 of the output value, so we can write it down as x%=673.5.
5. Now we have two simple equations:
1) 100%=780
2) x%=673.5
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%=780/673.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 673.5 is what percent of 780

100%/x%=780/673.5
(100/x)*x=(780/673.5)*x       - we multiply both sides of the equation by x
100=1.1581291759465*x       - we divide both sides of the equation by (1.1581291759465) to get x
100/1.1581291759465=x
86.346153846154=x
x=86.346153846154

now we have:
673.5 is 86.346153846154% of 780