-7.73% is the change from 388 to 358
Calculation steps:
[( 358 - 388 ) ÷ 388] x 100 = -7.73%
Formula
Percentage change = [(358 - 388) / 388] x 100
Subtract the new number by the original number
358 - 388 = -30
-30 ÷ 388 = -0.07731958762886598
-0.07731958762886598 x 100 = -7.73%