1280% is the change from 45 to 621
Calculation steps:
[( 621 - 45 ) ÷ 45] x 100 = 1280%
Formula
Percentage change = [(621 - 45) / 45] x 100
Subtract the new number by the original number
621 - 45 = 576
576 ÷ 45 = 12.8
12.8 x 100 = 1280%
Example