-98.5% is the change from 869 to 13
Calculation steps:
[( 13 - 869 ) ÷ 869] x 100 = -98.5%
Formula
Percentage change = [(13 - 869) / 869] x 100
Subtract the new number by the original number
13 - 869 = -856
-856 ÷ 869 = -0.9850402761795167
-0.9850402761795167 x 100 = -98.5%