-13.67% is the change from 490 to 423
Calculation steps:
[( 423 - 490 ) ÷ 490] x 100 = -13.67%
Formula
Percentage change = [(423 - 490) / 490] x 100
Subtract the new number by the original number
423 - 490 = -67
-67 ÷ 490 = -0.13673469387755102
-0.13673469387755102 x 100 = -13.67%