-48.42% is the change from 539 to 278
Calculation steps:
[( 278 - 539 ) ÷ 539] x 100 = -48.42%
Formula
Percentage change = [(278 - 539) / 539] x 100
Subtract the new number by the original number
278 - 539 = -261
-261 ÷ 539 = -0.4842300556586271
-0.4842300556586271 x 100 = -48.42%