-31.96% is the change from 485 to 330
Calculation steps:
[( 330 - 485 ) ÷ 485] x 100 = -31.96%
Formula
Percentage change = [(330 - 485) / 485] x 100
Subtract the new number by the original number
330 - 485 = -155
-155 ÷ 485 = -0.31958762886597936
-0.31958762886597936 x 100 = -31.96%