-38.31% is the change from 496 to 306
Calculation steps:
[( 306 - 496 ) ÷ 496] x 100 = -38.31%
Formula
Percentage change = [(306 - 496) / 496] x 100
Subtract the new number by the original number
306 - 496 = -190
-190 ÷ 496 = -0.38306451612903225
-0.38306451612903225 x 100 = -38.31%