-99.06% is the change from 848 to 8
Calculation steps:
[( 8 - 848 ) ÷ 848] x 100 = -99.06%
Formula
Percentage change = [(8 - 848) / 848] x 100
Subtract the new number by the original number
8 - 848 = -840
-840 ÷ 848 = -0.9905660377358491
-0.9905660377358491 x 100 = -99.06%