-91.21% is the change from 387 to 34
Calculation steps:
[( 34 - 387 ) ÷ 387] x 100 = -91.21%
Formula
Percentage change = [(34 - 387) / 387] x 100
Subtract the new number by the original number
34 - 387 = -353
-353 ÷ 387 = -0.9121447028423773
-0.9121447028423773 x 100 = -91.21%