34.74% is the change from 642 to 865
Calculation steps:
[( 865 - 642 ) ÷ 642] x 100 = 34.74%
Formula
Percentage change = [(865 - 642) / 642] x 100
Subtract the new number by the original number
865 - 642 = 223
223 ÷ 642 = 0.34735202492211836
0.34735202492211836 x 100 = 34.74%