-8.51% is the change from 388 to 355
Calculation steps:
[( 355 - 388 ) ÷ 388] x 100 = -8.51%
Formula
Percentage change = [(355 - 388) / 388] x 100
Subtract the new number by the original number
355 - 388 = -33
-33 ÷ 388 = -0.08505154639175258
-0.08505154639175258 x 100 = -8.51%