-44.59% is the change from 388 to 215
Calculation steps:
[( 215 - 388 ) ÷ 388] x 100 = -44.59%
Formula
Percentage change = [(215 - 388) / 388] x 100
Subtract the new number by the original number
215 - 388 = -173
-173 ÷ 388 = -0.44587628865979384
-0.44587628865979384 x 100 = -44.59%