-20.1% is the change from 383 to 306
Calculation steps:
[( 306 - 383 ) ÷ 383] x 100 = -20.1%
Formula
Percentage change = [(306 - 383) / 383] x 100
Subtract the new number by the original number
306 - 383 = -77
-77 ÷ 383 = -0.2010443864229765
-0.2010443864229765 x 100 = -20.1%