54.67% is the change from 642 to 993
Calculation steps:
[( 993 - 642 ) ÷ 642] x 100 = 54.67%
Formula
Percentage change = [(993 - 642) / 642] x 100
Subtract the new number by the original number
993 - 642 = 351
351 ÷ 642 = 0.5467289719626168
0.5467289719626168 x 100 = 54.67%