-6.73% is the change from 490 to 457
Calculation steps:
[( 457 - 490 ) ÷ 490] x 100 = -6.73%
Formula
Percentage change = [(457 - 490) / 490] x 100
Subtract the new number by the original number
457 - 490 = -33
-33 ÷ 490 = -0.0673469387755102
-0.0673469387755102 x 100 = -6.73%