-0.61% is the change from 494 to 491
Calculation steps:
[( 491 - 494 ) ÷ 494] x 100 = -0.61%
Formula
Percentage change = [(491 - 494) / 494] x 100
Subtract the new number by the original number
491 - 494 = -3
-3 ÷ 494 = -0.006072874493927126
-0.006072874493927126 x 100 = -0.61%