Can someone explain to me where the .955 came from? My teacher referred to this as the "counterpart" to .045.

The New Orleans Beverage Co. wants to know an estimate of the percentage of bottles that have improperly applied labels. A simple random sample of 400 bottles resulted in 18 of such bottles. rising these data, develop a 99% confidence interval to estimate the proportion of bottles with improperly applied labels. Y = # of bottles w/ improperly applied Labels nl D sample up = 400 ( . 045) = 18 - 25 ng= 400 (. 955 )= 382 n= 400 . 045+ 2.576 045 ( .955 X = 18 18 400 400 = . 045 . 045 + . 0267 D = Proportion 99% conf . 0183 . 0717