1145% is the change from 40 to 498
Calculation steps:
[( 498 - 40 ) ÷ 40] x 100 = 1145%
Formula
Percentage change = [(498 - 40) / 40] x 100
Subtract the new number by the original number
498 - 40 = 458
458 ÷ 40 = 11.45
11.45 x 100 = 1145%
Example