1257.5% is the change from 40 to 543
Calculation steps:
[( 543 - 40 ) ÷ 40] x 100 = 1257.5%
Formula
Percentage change = [(543 - 40) / 40] x 100
Subtract the new number by the original number
543 - 40 = 503
503 ÷ 40 = 12.575
12.575 x 100 = 1257.5%
Example