-99.59% is the change from 979 to 4
Calculation steps:
[( 4 - 979 ) ÷ 979] x 100 = -99.59%
Formula
Percentage change = [(4 - 979) / 979] x 100
Subtract the new number by the original number
4 - 979 = -975
-975 ÷ 979 = -0.9959141981613892
-0.9959141981613892 x 100 = -99.59%