-96.55% is the change from 869 to 30
Calculation steps:
[( 30 - 869 ) ÷ 869] x 100 = -96.55%
Formula
Percentage change = [(30 - 869) / 869] x 100
Subtract the new number by the original number
30 - 869 = -839
-839 ÷ 869 = -0.9654775604142692
-0.9654775604142692 x 100 = -96.55%