54.33% is the change from 646 to 997
Calculation steps:
[( 997 - 646 ) ÷ 646] x 100 = 54.33%
Formula
Percentage change = [(997 - 646) / 646] x 100
Subtract the new number by the original number
997 - 646 = 351
351 ÷ 646 = 0.5433436532507739
0.5433436532507739 x 100 = 54.33%