50.54% is the change from 649 to 977
Calculation steps:
[( 977 - 649 ) ÷ 649] x 100 = 50.54%
Formula
Percentage change = [(977 - 649) / 649] x 100
Subtract the new number by the original number
977 - 649 = 328
328 ÷ 649 = 0.5053929121725732
0.5053929121725732 x 100 = 50.54%