-10.41% is the change from 490 to 439
Calculation steps:
[( 439 - 490 ) ÷ 490] x 100 = -10.41%
Formula
Percentage change = [(439 - 490) / 490] x 100
Subtract the new number by the original number
439 - 490 = -51
-51 ÷ 490 = -0.10408163265306122
-0.10408163265306122 x 100 = -10.41%