49.53% is the change from 642 to 960
Calculation steps:
[( 960 - 642 ) ÷ 642] x 100 = 49.53%
Formula
Percentage change = [(960 - 642) / 642] x 100
Subtract the new number by the original number
960 - 642 = 318
318 ÷ 642 = 0.4953271028037383
0.4953271028037383 x 100 = 49.53%