216.78 is what percent of 789 - 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 789 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 789, so we can write it down as 100%=789.
4. We know, that x% equals 216.78 of the output value, so we can write it down as x%=216.78.
5. Now we have two simple equations:
1) 100%=789
2) x%=216.78
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%=789/216.78
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 216.78 is what percent of 789

100%/x%=789/216.78
(100/x)*x=(789/216.78)*x       - we multiply both sides of the equation by x
100=3.6396346526432*x       - we divide both sides of the equation by (3.6396346526432) to get x
100/3.6396346526432=x
27.475285171103=x
x=27.475285171103

now we have:
216.78 is 27.475285171103% of 789