1352.5% is the change from 40 to 581
Calculation steps:
[( 581 - 40 ) ÷ 40] x 100 = 1352.5%
Formula
Percentage change = [(581 - 40) / 40] x 100
Subtract the new number by the original number
581 - 40 = 541
541 ÷ 40 = 13.525
13.525 x 100 = 1352.5%
Example