1777.78% is the change from 45 to 845
Calculation steps:
[( 845 - 45 ) ÷ 45] x 100 = 1777.78%
Formula
Percentage change = [(845 - 45) / 45] x 100
Subtract the new number by the original number
845 - 45 = 800
800 ÷ 45 = 17.77777777777778
17.77777777777778 x 100 = 1777.78%