1477.78% is the change from 18 to 284
Calculation steps:
[( 284 - 18 ) ÷ 18] x 100 = 1477.78%
Formula
Percentage change = [(284 - 18) / 18] x 100
Subtract the new number by the original number
284 - 18 = 266
266 ÷ 18 = 14.777777777777779
14.777777777777779 x 100 = 1477.78%