625% is the change from 40 to 290
Calculation steps:
[( 290 - 40 ) ÷ 40] x 100 = 625%
Formula
Percentage change = [(290 - 40) / 40] x 100
Subtract the new number by the original number
290 - 40 = 250
250 ÷ 40 = 6.25
6.25 x 100 = 625%
Example