-96.83% is the change from 979 to 31
Calculation steps:
[( 31 - 979 ) ÷ 979] x 100 = -96.83%
Formula
Percentage change = [(31 - 979) / 979] x 100
Subtract the new number by the original number
31 - 979 = -948
-948 ÷ 979 = -0.9683350357507661
-0.9683350357507661 x 100 = -96.83%