If your answer is a negative number then this is a percentage decrease. 60 - 8 52 52 60 08667 08667 100 8667 So if you switch to an LED light bulb your lamp will use 8667 less energy per hour. Just hit the calculate button and you are good to go.
Once we know what the decrease is just divide the decrease by the original amount and express the answer as a percent.
07 x 420. Using reverse percentages is a way of working backwards on a percentages problem in order to find the original amount. Once we know what the decrease is just divide the decrease by the original amount and express the answer as a percent. In order to do this we.