500% is the change from 45 to 270
Calculation steps:
[( 270 - 45 ) ÷ 45] x 100 = 500%
Formula
Percentage change = [(270 - 45) / 45] x 100
Subtract the new number by the original number
270 - 45 = 225
225 ÷ 45 = 5
5 x 100 = 500%
Example