-6.92% is the change from 491 to 457
Calculation steps:
[( 457 - 491 ) ÷ 491] x 100 = -6.92%
Formula
Percentage change = [(457 - 491) / 491] x 100
Subtract the new number by the original number
457 - 491 = -34
-34 ÷ 491 = -0.06924643584521385
-0.06924643584521385 x 100 = -6.92%