-52.08% is the change from 649 to 311
Calculation steps:
[( 311 - 649 ) ÷ 649] x 100 = -52.08%
Formula
Percentage change = [(311 - 649) / 649] x 100
Subtract the new number by the original number
311 - 649 = -338
-338 ÷ 649 = -0.5208012326656395
-0.5208012326656395 x 100 = -52.08%