-53% is the change from 649 to 305
Calculation steps:
[( 305 - 649 ) ÷ 649] x 100 = -53%
Formula
Percentage change = [(305 - 649) / 649] x 100
Subtract the new number by the original number
305 - 649 = -344
-344 ÷ 649 = -0.5300462249614792
-0.5300462249614792 x 100 = -53%