47.59% is the change from 643 to 949
Calculation steps:
[( 949 - 643 ) ÷ 643] x 100 = 47.59%
Formula
Percentage change = [(949 - 643) / 643] x 100
Subtract the new number by the original number
949 - 643 = 306
306 ÷ 643 = 0.4758942457231726
0.4758942457231726 x 100 = 47.59%