What percentage is 470m out of 1.23km

Change the values so that they are either both meters or both kilometers.

To change meters to kilometers, divide by 1000: 470m / 1000 = .470 m

To change kilometers to meters, multiply by 1000: 1.23km * 1000 = 1230m

For me, it's easier when I am using whole numbers, so I would find the percentage of 470m out of 1230m.

Divide the part (470m) by the whole (1230m) to get a decimal value, then multiply by 100 to get a percentage.

470 / 1230 * 100 = 38.21%.