577.78% is the change from 45 to 305
Calculation steps:
[( 305 - 45 ) ÷ 45] x 100 = 577.78%
Formula
Percentage change = [(305 - 45) / 45] x 100
Subtract the new number by the original number
305 - 45 = 260
260 ÷ 45 = 5.777777777777778
5.777777777777778 x 100 = 577.78%