-93.19% is the change from 279 to 19
Calculation steps:
[( 19 - 279 ) ÷ 279] x 100 = -93.19%
Formula
Percentage change = [(19 - 279) / 279] x 100
Subtract the new number by the original number
19 - 279 = -260
-260 ÷ 279 = -0.931899641577061
-0.931899641577061 x 100 = -93.19%