Answer:Percentage Decrease formula:Original Value- New Value/Original Value × 100%100-80÷100 × 100%20÷100 × 100%0.2 × 100%final answer is: 20%Answer: The Percentage Decrease from 100 to 80 is 20%.
Answer:20Step-by-step explanation:because 100-80 po is 20100-80=20