-38.55% is the change from 498 to 306
Calculation steps:
[( 306 - 498 ) ÷ 498] x 100 = -38.55%
Formula
Percentage change = [(306 - 498) / 498] x 100
Subtract the new number by the original number
306 - 498 = -192
-192 ÷ 498 = -0.3855421686746988
-0.3855421686746988 x 100 = -38.55%