-4.7% is the change from 319 to 304
Calculation steps:
[( 304 - 319 ) ÷ 319] x 100 = -4.7%
Formula
Percentage change = [(304 - 319) / 319] x 100
Subtract the new number by the original number
304 - 319 = -15
-15 ÷ 319 = -0.047021943573667714
-0.047021943573667714 x 100 = -4.7%