-95.34% is the change from 279 to 13
Calculation steps:
[( 13 - 279 ) ÷ 279] x 100 = -95.34%
Formula
Percentage change = [(13 - 279) / 279] x 100
Subtract the new number by the original number
13 - 279 = -266
-266 ÷ 279 = -0.953405017921147
-0.953405017921147 x 100 = -95.34%