-97.95% is the change from 391 to 8
Calculation steps:
[( 8 - 391 ) ÷ 391] x 100 = -97.95%
Formula
Percentage change = [(8 - 391) / 391] x 100
Subtract the new number by the original number
8 - 391 = -383
-383 ÷ 391 = -0.979539641943734
-0.979539641943734 x 100 = -97.95%