1197.5% is the change from 40 to 519
Calculation steps:
[( 519 - 40 ) ÷ 40] x 100 = 1197.5%
Formula
Percentage change = [(519 - 40) / 40] x 100
Subtract the new number by the original number
519 - 40 = 479
479 ÷ 40 = 11.975
11.975 x 100 = 1197.5%
Example