-42.12% is the change from 539 to 312
Calculation steps:
[( 312 - 539 ) ÷ 539] x 100 = -42.12%
Formula
Percentage change = [(312 - 539) / 539] x 100
Subtract the new number by the original number
312 - 539 = -227
-227 ÷ 539 = -0.42115027829313545
-0.42115027829313545 x 100 = -42.12%