-0.41% is the change from 493 to 491
Calculation steps:
[( 491 - 493 ) ÷ 493] x 100 = -0.41%
Formula
Percentage change = [(491 - 493) / 493] x 100
Subtract the new number by the original number
491 - 493 = -2
-2 ÷ 493 = -0.004056795131845842
-0.004056795131845842 x 100 = -0.41%