-53.43% is the change from 539 to 251
Calculation steps:
[( 251 - 539 ) ÷ 539] x 100 = -53.43%
Formula
Percentage change = [(251 - 539) / 539] x 100
Subtract the new number by the original number
251 - 539 = -288
-288 ÷ 539 = -0.5343228200371057
-0.5343228200371057 x 100 = -53.43%