638.18% is the change from 55 to 406
Calculation steps:
[( 406 - 55 ) ÷ 55] x 100 = 638.18%
Formula
Percentage change = [(406 - 55) / 55] x 100
Subtract the new number by the original number
406 - 55 = 351
351 ÷ 55 = 6.381818181818182
6.381818181818182 x 100 = 638.18%