-33.47% is the change from 490 to 326
Calculation steps:
[( 326 - 490 ) ÷ 490] x 100 = -33.47%
Formula
Percentage change = [(326 - 490) / 490] x 100
Subtract the new number by the original number
326 - 490 = -164
-164 ÷ 490 = -0.3346938775510204
-0.3346938775510204 x 100 = -33.47%