55.14% is the change from 642 to 996
Calculation steps:
[( 996 - 642 ) ÷ 642] x 100 = 55.14%
Formula
Percentage change = [(996 - 642) / 642] x 100
Subtract the new number by the original number
996 - 642 = 354
354 ÷ 642 = 0.5514018691588785
0.5514018691588785 x 100 = 55.14%