342.99% is the change from 221 to 979
Calculation steps:
[( 979 - 221 ) ÷ 221] x 100 = 342.99%
Formula
Percentage change = [(979 - 221) / 221] x 100
Subtract the new number by the original number
979 - 221 = 758
758 ÷ 221 = 3.429864253393665
3.429864253393665 x 100 = 342.99%