1403.33% is the change from 30 to 451
Calculation steps:
[( 451 - 30 ) ÷ 30] x 100 = 1403.33%
Formula
Percentage change = [(451 - 30) / 30] x 100
Subtract the new number by the original number
451 - 30 = 421
421 ÷ 30 = 14.033333333333333
14.033333333333333 x 100 = 1403.33%