1177.5% is the change from 40 to 511
Calculation steps:
[( 511 - 40 ) ÷ 40] x 100 = 1177.5%
Formula
Percentage change = [(511 - 40) / 40] x 100
Subtract the new number by the original number
511 - 40 = 471
471 ÷ 40 = 11.775
11.775 x 100 = 1177.5%
Example