-14.08% is the change from 490 to 421
Calculation steps:
[( 421 - 490 ) ÷ 490] x 100 = -14.08%
Formula
Percentage change = [(421 - 490) / 490] x 100
Subtract the new number by the original number
421 - 490 = -69
-69 ÷ 490 = -0.14081632653061224
-0.14081632653061224 x 100 = -14.08%