-51.21% is the change from 539 to 263
Calculation steps:
[( 263 - 539 ) ÷ 539] x 100 = -51.21%
Formula
Percentage change = [(263 - 539) / 539] x 100
Subtract the new number by the original number
263 - 539 = -276
-276 ÷ 539 = -0.5120593692022264
-0.5120593692022264 x 100 = -51.21%