-99.59% is the change from 981 to 4
Calculation steps:
[( 4 - 981 ) ÷ 981] x 100 = -99.59%
Formula
Percentage change = [(4 - 981) / 981] x 100
Subtract the new number by the original number
4 - 981 = -977
-977 ÷ 981 = -0.9959225280326198
-0.9959225280326198 x 100 = -99.59%