48.13% is the change from 642 to 951
Calculation steps:
[( 951 - 642 ) ÷ 642] x 100 = 48.13%
Formula
Percentage change = [(951 - 642) / 642] x 100
Subtract the new number by the original number
951 - 642 = 309
309 ÷ 642 = 0.48130841121495327
0.48130841121495327 x 100 = 48.13%