-87.89% is the change from 388 to 47
Calculation steps:
[( 47 - 388 ) ÷ 388] x 100 = -87.89%
Formula
Percentage change = [(47 - 388) / 388] x 100
Subtract the new number by the original number
47 - 388 = -341
-341 ÷ 388 = -0.8788659793814433
-0.8788659793814433 x 100 = -87.89%