-51.04% is the change from 529 to 259
Calculation steps:
[( 259 - 529 ) ÷ 529] x 100 = -51.04%
Formula
Percentage change = [(259 - 529) / 529] x 100
Subtract the new number by the original number
259 - 529 = -270
-270 ÷ 529 = -0.5103969754253308
-0.5103969754253308 x 100 = -51.04%