246.46% is the change from 99 to 343
Calculation steps:
[( 343 - 99 ) ÷ 99] x 100 = 246.46%
Formula
Percentage change = [(343 - 99) / 99] x 100
Subtract the new number by the original number
343 - 99 = 244
244 ÷ 99 = 2.4646464646464645
2.4646464646464645 x 100 = 246.46%