-96.51% is the change from 859 to 30
Calculation steps:
[( 30 - 859 ) ÷ 859] x 100 = -96.51%
Formula
Percentage change = [(30 - 859) / 859] x 100
Subtract the new number by the original number
30 - 859 = -829
-829 ÷ 859 = -0.9650756693830035
-0.9650756693830035 x 100 = -96.51%