1317.78% is the change from 45 to 638
Calculation steps:
[( 638 - 45 ) ÷ 45] x 100 = 1317.78%
Formula
Percentage change = [(638 - 45) / 45] x 100
Subtract the new number by the original number
638 - 45 = 593
593 ÷ 45 = 13.177777777777777
13.177777777777777 x 100 = 1317.78%