0.94% is the change from 636 to 642
Calculation steps:
[( 642 - 636 ) ÷ 636] x 100 = 0.94%
Formula
Percentage change = [(642 - 636) / 636] x 100
Subtract the new number by the original number
642 - 636 = 6
6 ÷ 636 = 0.009433962264150943
0.009433962264150943 x 100 = 0.94%