349.32% is the change from 221 to 993
Calculation steps:
[( 993 - 221 ) ÷ 221] x 100 = 349.32%
Formula
Percentage change = [(993 - 221) / 221] x 100
Subtract the new number by the original number
993 - 221 = 772
772 ÷ 221 = 3.493212669683258
3.493212669683258 x 100 = 349.32%