49.38% is the change from 642 to 959
Calculation steps:
[( 959 - 642 ) ÷ 642] x 100 = 49.38%
Formula
Percentage change = [(959 - 642) / 642] x 100
Subtract the new number by the original number
959 - 642 = 317
317 ÷ 642 = 0.4937694704049844
0.4937694704049844 x 100 = 49.38%