-31.63% is the change from 490 to 335
Calculation steps:
[( 335 - 490 ) ÷ 490] x 100 = -31.63%
Formula
Percentage change = [(335 - 490) / 490] x 100
Subtract the new number by the original number
335 - 490 = -155
-155 ÷ 490 = -0.3163265306122449
-0.3163265306122449 x 100 = -31.63%