245.45% is the change from 99 to 342
Calculation steps:
[( 342 - 99 ) ÷ 99] x 100 = 245.45%
Formula
Percentage change = [(342 - 99) / 99] x 100
Subtract the new number by the original number
342 - 99 = 243
243 ÷ 99 = 2.4545454545454546
2.4545454545454546 x 100 = 245.45%