-97.48% is the change from 318 to 8
Calculation steps:
[( 8 - 318 ) ÷ 318] x 100 = -97.48%
Formula
Percentage change = [(8 - 318) / 318] x 100
Subtract the new number by the original number
8 - 318 = -310
-310 ÷ 318 = -0.9748427672955975
-0.9748427672955975 x 100 = -97.48%