-81.51% is the change from 979 to 181
Calculation steps:
[( 181 - 979 ) ÷ 979] x 100 = -81.51%
Formula
Percentage change = [(181 - 979) / 979] x 100
Subtract the new number by the original number
181 - 979 = -798
-798 ÷ 979 = -0.81511746680286
-0.81511746680286 x 100 = -81.51%