1240% is the change from 45 to 603
Calculation steps:
[( 603 - 45 ) ÷ 45] x 100 = 1240%
Formula
Percentage change = [(603 - 45) / 45] x 100
Subtract the new number by the original number
603 - 45 = 558
558 ÷ 45 = 12.4
12.4 x 100 = 1240%
Example