-96.9% is the change from 387 to 12
Calculation steps:
[( 12 - 387 ) ÷ 387] x 100 = -96.9%
Formula
Percentage change = [(12 - 387) / 387] x 100
Subtract the new number by the original number
12 - 387 = -375
-375 ÷ 387 = -0.9689922480620154
-0.9689922480620154 x 100 = -96.9%