178.86% is the change from 123 to 343
Calculation steps:
[( 343 - 123 ) ÷ 123] x 100 = 178.86%
Formula
Percentage change = [(343 - 123) / 123] x 100
Subtract the new number by the original number
343 - 123 = 220
220 ÷ 123 = 1.7886178861788617
1.7886178861788617 x 100 = 178.86%