-98.46% is the change from 390 to 6
Calculation steps:
[( 6 - 390 ) ÷ 390] x 100 = -98.46%
Formula
Percentage change = [(6 - 390) / 390] x 100
Subtract the new number by the original number
6 - 390 = -384
-384 ÷ 390 = -0.9846153846153847
-0.9846153846153847 x 100 = -98.46%