-1.02% is the change from 490 to 485
Calculation steps:
[( 485 - 490 ) ÷ 490] x 100 = -1.02%
Formula
Percentage change = [(485 - 490) / 490] x 100
Subtract the new number by the original number
485 - 490 = -5
-5 ÷ 490 = -0.01020408163265306
-0.01020408163265306 x 100 = -1.02%