-69.9% is the change from 485 to 146
Calculation steps:
[( 146 - 485 ) ÷ 485] x 100 = -69.9%
Formula
Percentage change = [(146 - 485) / 485] x 100
Subtract the new number by the original number
146 - 485 = -339
-339 ÷ 485 = -0.6989690721649484
-0.6989690721649484 x 100 = -69.9%