173.81% is the change from 126 to 345
Calculation steps:
[( 345 - 126 ) ÷ 126] x 100 = 173.81%
Formula
Percentage change = [(345 - 126) / 126] x 100
Subtract the new number by the original number
345 - 126 = 219
219 ÷ 126 = 1.7380952380952381
1.7380952380952381 x 100 = 173.81%