443.43% is the change from 99 to 538
Calculation steps:
[( 538 - 99 ) ÷ 99] x 100 = 443.43%
Formula
Percentage change = [(538 - 99) / 99] x 100
Subtract the new number by the original number
538 - 99 = 439
439 ÷ 99 = 4.434343434343434
4.434343434343434 x 100 = 443.43%