What is 800 plus 20 percent?

Find 20% of 800. Divide the percentage by 100 to convert it to a decimal. You get 0.2. Then multiply the decimal by the amount. 0.2 x 800. You get 160.

Then add this to the original amount. 800 + 160 = 960.

Or to simplify this...you can just multiply 800 by 1.2 (1 plus the percentage in decimal form).