-97.67% is the change from 387 to 9
Calculation steps:
[( 9 - 387 ) ÷ 387] x 100 = -97.67%
Formula
Percentage change = [(9 - 387) / 387] x 100
Subtract the new number by the original number
9 - 387 = -378
-378 ÷ 387 = -0.9767441860465116
-0.9767441860465116 x 100 = -97.67%