54.59% is the change from 643 to 994
Calculation steps:
[( 994 - 643 ) ÷ 643] x 100 = 54.59%
Formula
Percentage change = [(994 - 643) / 643] x 100
Subtract the new number by the original number
994 - 643 = 351
351 ÷ 643 = 0.5458786936236392
0.5458786936236392 x 100 = 54.59%