-70.2% is the change from 490 to 146
Calculation steps:
[( 146 - 490 ) ÷ 490] x 100 = -70.2%
Formula
Percentage change = [(146 - 490) / 490] x 100
Subtract the new number by the original number
146 - 490 = -344
-344 ÷ 490 = -0.7020408163265306
-0.7020408163265306 x 100 = -70.2%