-89.58% is the change from 979 to 102
Calculation steps:
[( 102 - 979 ) ÷ 979] x 100 = -89.58%
Formula
Percentage change = [(102 - 979) / 979] x 100
Subtract the new number by the original number
102 - 979 = -877
-877 ÷ 979 = -0.8958120531154239
-0.8958120531154239 x 100 = -89.58%