306.45% is the change from 155 to 630
Calculation steps:
[( 630 - 155 ) ÷ 155] x 100 = 306.45%
Formula
Percentage change = [(630 - 155) / 155] x 100
Subtract the new number by the original number
630 - 155 = 475
475 ÷ 155 = 3.064516129032258
3.064516129032258 x 100 = 306.45%