-50.85% is the change from 527 to 259
Calculation steps:
[( 259 - 527 ) ÷ 527] x 100 = -50.85%
Formula
Percentage change = [(259 - 527) / 527] x 100
Subtract the new number by the original number
259 - 527 = -268
-268 ÷ 527 = -0.50853889943074
-0.50853889943074 x 100 = -50.85%