Question

780 is what percent of 540?

Answer 1

The way I like to look at these problems is to first write it as an expression

780 is what percent of 540

The word 'of' signifies multiplication while the word 'is' signifies the equal sign.

We're trying to solve for some percentage or x%

So we could re-write that as

780 =x % * 540

Answer 2

Can you solve for x now?