277.78% is the change from 45 to 170
Calculation steps:
[( 170 - 45 ) ÷ 45] x 100 = 277.78%
Formula
Percentage change = [(170 - 45) / 45] x 100
Subtract the new number by the original number
170 - 45 = 125
125 ÷ 45 = 2.7777777777777777
2.7777777777777777 x 100 = 277.78%