1252.5% is the change from 40 to 541
Calculation steps:
[( 541 - 40 ) ÷ 40] x 100 = 1252.5%
Formula
Percentage change = [(541 - 40) / 40] x 100
Subtract the new number by the original number
541 - 40 = 501
501 ÷ 40 = 12.525
12.525 x 100 = 1252.5%
Example