657.5% is the change from 40 to 303
Calculation steps:
[( 303 - 40 ) ÷ 40] x 100 = 657.5%
Formula
Percentage change = [(303 - 40) / 40] x 100
Subtract the new number by the original number
303 - 40 = 263
263 ÷ 40 = 6.575
6.575 x 100 = 657.5%
Example