-56.1% is the change from 590 to 259
Calculation steps:
[( 259 - 590 ) ÷ 590] x 100 = -56.1%
Formula
Percentage change = [(259 - 590) / 590] x 100
Subtract the new number by the original number
259 - 590 = -331
-331 ÷ 590 = -0.5610169491525424
-0.5610169491525424 x 100 = -56.1%