How to Calculate Percentage Change

First, find the change: $25-20=5$. Then divide by the original value: $5÷20=0.25$. Now multiply by 100: $0.25\times 100=25$. So the percentage change is 25%.

First, find the change: $48-60=-12$. Then divide by the original: $-12÷60=-0.2$. Multiply by 100: $-0.2\times 100=-20$. So it is a 20% decrease.

First, find the change: $340-400=-60$. Divide by the original: $-60÷400=-0.15$. Multiply by 100: $-0.15\times 100=-15$. So it's a 15% decrease.

First, find the change: $900-1200=-300$. Divide by the original: $-300÷1200=-0.25$. Multiply by 100: $-0.25\times 100=-25$. So it's a 25% decrease.

First, find the change: $3000-2500=500$. Divide by the original: $500÷2500=0.2$. Multiply by 100: $0.2\times 100=20$. So it's a 20% increase.

First, find the change: $33,000-30,000=3,000$. Divide by the original: $3,000÷30,000=0.1$. Multiply by 100: $0.1\times 100=10$. So it's a 10% increase.