-74.42% is the change from 649 to 166
Calculation steps:
[( 166 - 649 ) ÷ 649] x 100 = -74.42%
Formula
Percentage change = [(166 - 649) / 649] x 100
Subtract the new number by the original number
166 - 649 = -483
-483 ÷ 649 = -0.7442218798151001
-0.7442218798151001 x 100 = -74.42%