1340% is the change from 45 to 648
Calculation steps:
[( 648 - 45 ) ÷ 45] x 100 = 1340%
Formula
Percentage change = [(648 - 45) / 45] x 100
Subtract the new number by the original number
648 - 45 = 603
603 ÷ 45 = 13.4
13.4 x 100 = 1340%
Example