-32.65% is the change from 490 to 330
Calculation steps:
[( 330 - 490 ) ÷ 490] x 100 = -32.65%
Formula
Percentage change = [(330 - 490) / 490] x 100
Subtract the new number by the original number
330 - 490 = -160
-160 ÷ 490 = -0.32653061224489793
-0.32653061224489793 x 100 = -32.65%