-81.61% is the change from 979 to 180
Calculation steps:
[( 180 - 979 ) ÷ 979] x 100 = -81.61%
Formula
Percentage change = [(180 - 979) / 979] x 100
Subtract the new number by the original number
180 - 979 = -799
-799 ÷ 979 = -0.8161389172625128
-0.8161389172625128 x 100 = -81.61%