-3.67% is the change from 491 to 473
Calculation steps:
[( 473 - 491 ) ÷ 491] x 100 = -3.67%
Formula
Percentage change = [(473 - 491) / 491] x 100
Subtract the new number by the original number
473 - 491 = -18
-18 ÷ 491 = -0.03665987780040733
-0.03665987780040733 x 100 = -3.67%