-91.68% is the change from 649 to 54
Calculation steps:
[( 54 - 649 ) ÷ 649] x 100 = -91.68%
Formula
Percentage change = [(54 - 649) / 649] x 100
Subtract the new number by the original number
54 - 649 = -595
-595 ÷ 649 = -0.9167950693374423
-0.9167950693374423 x 100 = -91.68%