-89.96% is the change from 279 to 28
Calculation steps:
[( 28 - 279 ) ÷ 279] x 100 = -89.96%
Formula
Percentage change = [(28 - 279) / 279] x 100
Subtract the new number by the original number
28 - 279 = -251
-251 ÷ 279 = -0.899641577060932
-0.899641577060932 x 100 = -89.96%