543.43% is the change from 99 to 637
Calculation steps:
[( 637 - 99 ) ÷ 99] x 100 = 543.43%
Formula
Percentage change = [(637 - 99) / 99] x 100
Subtract the new number by the original number
637 - 99 = 538
538 ÷ 99 = 5.434343434343434
5.434343434343434 x 100 = 543.43%