-89.98% is the change from 649 to 65
Calculation steps:
[( 65 - 649 ) ÷ 649] x 100 = -89.98%
Formula
Percentage change = [(65 - 649) / 649] x 100
Subtract the new number by the original number
65 - 649 = -584
-584 ÷ 649 = -0.8998459167950693
-0.8998459167950693 x 100 = -89.98%