47.82% is the change from 642 to 949
Calculation steps:
[( 949 - 642 ) ÷ 642] x 100 = 47.82%
Formula
Percentage change = [(949 - 642) / 642] x 100
Subtract the new number by the original number
949 - 642 = 307
307 ÷ 642 = 0.4781931464174455
0.4781931464174455 x 100 = 47.82%