637.5% is the change from 40 to 295
Calculation steps:
[( 295 - 40 ) ÷ 40] x 100 = 637.5%
Formula
Percentage change = [(295 - 40) / 40] x 100
Subtract the new number by the original number
295 - 40 = 255
255 ÷ 40 = 6.375
6.375 x 100 = 637.5%
Example