410% is the change from 40 to 204
Calculation steps:
[( 204 - 40 ) ÷ 40] x 100 = 410%
Formula
Percentage change = [(204 - 40) / 40] x 100
Subtract the new number by the original number
204 - 40 = 164
164 ÷ 40 = 4.1
4.1 x 100 = 410%
Example