-99.19% is the change from 859 to 7
Calculation steps:
[( 7 - 859 ) ÷ 859] x 100 = -99.19%
Formula
Percentage change = [(7 - 859) / 859] x 100
Subtract the new number by the original number
7 - 859 = -852
-852 ÷ 859 = -0.9918509895227008
-0.9918509895227008 x 100 = -99.19%