397.98% is the change from 99 to 493
Calculation steps:
[( 493 - 99 ) ÷ 99] x 100 = 397.98%
Formula
Percentage change = [(493 - 99) / 99] x 100
Subtract the new number by the original number
493 - 99 = 394
394 ÷ 99 = 3.9797979797979797
3.9797979797979797 x 100 = 397.98%