1175% is the change from 40 to 510
Calculation steps:
[( 510 - 40 ) ÷ 40] x 100 = 1175%
Formula
Percentage change = [(510 - 40) / 40] x 100
Subtract the new number by the original number
510 - 40 = 470
470 ÷ 40 = 11.75
11.75 x 100 = 1175%
Example