-83.82% is the change from 649 to 105
Calculation steps:
[( 105 - 649 ) ÷ 649] x 100 = -83.82%
Formula
Percentage change = [(105 - 649) / 649] x 100
Subtract the new number by the original number
105 - 649 = -544
-544 ÷ 649 = -0.8382126348228043
-0.8382126348228043 x 100 = -83.82%