-77.5% is the change from 649 to 146
Calculation steps:
[( 146 - 649 ) ÷ 649] x 100 = -77.5%
Formula
Percentage change = [(146 - 649) / 649] x 100
Subtract the new number by the original number
146 - 649 = -503
-503 ÷ 649 = -0.7750385208012327
-0.7750385208012327 x 100 = -77.5%