Let's make an equation. 19,000x=24,320 This equation shows the percentage increase, which is x. Once we have x, we need to subtract 1 from it since in the equation the 1 shows that it's increeasing. All we need to do is divide both sides by 19,000. 24,320÷19,000 1,28-1=0.28; we need to multiply by 100 to find the increase. 0.28×100=28