300.65% is the change from 155 to 621
Calculation steps:
[( 621 - 155 ) ÷ 155] x 100 = 300.65%
Formula
Percentage change = [(621 - 155) / 155] x 100
Subtract the new number by the original number
621 - 155 = 466
466 ÷ 155 = 3.0064516129032257
3.0064516129032257 x 100 = 300.65%