-30.72% is the change from 485 to 336
Calculation steps:
[( 336 - 485 ) ÷ 485] x 100 = -30.72%
Formula
Percentage change = [(336 - 485) / 485] x 100
Subtract the new number by the original number
336 - 485 = -149
-149 ÷ 485 = -0.30721649484536084
-0.30721649484536084 x 100 = -30.72%