-94.21% is the change from 259 to 15
Calculation steps:
[( 15 - 259 ) ÷ 259] x 100 = -94.21%
Formula
Percentage change = [(15 - 259) / 259] x 100
Subtract the new number by the original number
15 - 259 = -244
-244 ÷ 259 = -0.9420849420849421
-0.9420849420849421 x 100 = -94.21%