-97.16% is the change from 317 to 9
Calculation steps:
[( 9 - 317 ) ÷ 317] x 100 = -97.16%
Formula
Percentage change = [(9 - 317) / 317] x 100
Subtract the new number by the original number
9 - 317 = -308
-308 ÷ 317 = -0.9716088328075709
-0.9716088328075709 x 100 = -97.16%