-37.11% is the change from 485 to 305
Calculation steps:
[( 305 - 485 ) ÷ 485] x 100 = -37.11%
Formula
Percentage change = [(305 - 485) / 485] x 100
Subtract the new number by the original number
305 - 485 = -180
-180 ÷ 485 = -0.3711340206185567
-0.3711340206185567 x 100 = -37.11%