-83.98% is the change from 649 to 104
Calculation steps:
[( 104 - 649 ) ÷ 649] x 100 = -83.98%
Formula
Percentage change = [(104 - 649) / 649] x 100
Subtract the new number by the original number
104 - 649 = -545
-545 ÷ 649 = -0.8397534668721109
-0.8397534668721109 x 100 = -83.98%