48.83% is the change from 643 to 957
Calculation steps:
[( 957 - 643 ) ÷ 643] x 100 = 48.83%
Formula
Percentage change = [(957 - 643) / 643] x 100
Subtract the new number by the original number
957 - 643 = 314
314 ÷ 643 = 0.48833592534992226
0.48833592534992226 x 100 = 48.83%