51.18% is the change from 424 to 641
Calculation steps:
[( 641 - 424 ) ÷ 424] x 100 = 51.18%
Formula
Percentage change = [(641 - 424) / 424] x 100
Subtract the new number by the original number
641 - 424 = 217
217 ÷ 424 = 0.5117924528301887
0.5117924528301887 x 100 = 51.18%