-50.76% is the change from 526 to 259
Calculation steps:
[( 259 - 526 ) ÷ 526] x 100 = -50.76%
Formula
Percentage change = [(259 - 526) / 526] x 100
Subtract the new number by the original number
259 - 526 = -267
-267 ÷ 526 = -0.5076045627376425
-0.5076045627376425 x 100 = -50.76%