-89.92% is the change from 387 to 39
Calculation steps:
[( 39 - 387 ) ÷ 387] x 100 = -89.92%
Formula
Percentage change = [(39 - 387) / 387] x 100
Subtract the new number by the original number
39 - 387 = -348
-348 ÷ 387 = -0.8992248062015504
-0.8992248062015504 x 100 = -89.92%