200
200 to 180 is a 10% decrease.
It is: 180/200 times 100 = 90%
9/10 of 200 = 180
9/10 of 200 is 180
180 rounded to the nearest 100 is 200
180/200 = 18/20 = 9/10
9/10 of 200 = 180/1= 9/10 * 200= 180/1
3/4 is 75%
200
It's already there.
percentage ?= 90%= 180/200 * 100%= 0.90 * 100%= 90%