1620% is the change from 45 to 774
Calculation steps:
[( 774 - 45 ) ÷ 45] x 100 = 1620%
Formula
Percentage change = [(774 - 45) / 45] x 100
Subtract the new number by the original number
774 - 45 = 729
729 ÷ 45 = 16.2
16.2 x 100 = 1620%
Example