597.5% is the change from 40 to 279
Calculation steps:
[( 279 - 40 ) ÷ 40] x 100 = 597.5%
Formula
Percentage change = [(279 - 40) / 40] x 100
Subtract the new number by the original number
279 - 40 = 239
239 ÷ 40 = 5.975
5.975 x 100 = 597.5%
Example