-31.43% is the change from 490 to 336
Calculation steps:
[( 336 - 490 ) ÷ 490] x 100 = -31.43%
Formula
Percentage change = [(336 - 490) / 490] x 100
Subtract the new number by the original number
336 - 490 = -154
-154 ÷ 490 = -0.3142857142857143
-0.3142857142857143 x 100 = -31.43%