-98.1% is the change from 315 to 6
Calculation steps:
[( 6 - 315 ) ÷ 315] x 100 = -98.1%
Formula
Percentage change = [(6 - 315) / 315] x 100
Subtract the new number by the original number
6 - 315 = -309
-309 ÷ 315 = -0.9809523809523809
-0.9809523809523809 x 100 = -98.1%