1380% is the change from 45 to 666
Calculation steps:
[( 666 - 45 ) ÷ 45] x 100 = 1380%
Formula
Percentage change = [(666 - 45) / 45] x 100
Subtract the new number by the original number
666 - 45 = 621
621 ÷ 45 = 13.8
13.8 x 100 = 1380%
Example