-20.34% is the change from 649 to 517
Calculation steps:
[( 517 - 649 ) ÷ 649] x 100 = -20.34%
Formula
Percentage change = [(517 - 649) / 649] x 100
Subtract the new number by the original number
517 - 649 = -132
-132 ÷ 649 = -0.2033898305084746
-0.2033898305084746 x 100 = -20.34%