234.95% is the change from 103 to 345
Calculation steps:
[( 345 - 103 ) ÷ 103] x 100 = 234.95%
Formula
Percentage change = [(345 - 103) / 103] x 100
Subtract the new number by the original number
345 - 103 = 242
242 ÷ 103 = 2.349514563106796
2.349514563106796 x 100 = 234.95%