438% is the change from 100 to 538
Calculation steps:
[( 538 - 100 ) ÷ 100] x 100 = 438%
Formula
Percentage change = [(538 - 100) / 100] x 100
Subtract the new number by the original number
538 - 100 = 438
438 ÷ 100 = 4.38
4.38 x 100 = 438%
Example