34.96% is the change from 123 to 166
Calculation steps:
[( 166 - 123 ) ÷ 123] x 100 = 34.96%
Formula
Percentage change = [(166 - 123) / 123] x 100
Subtract the new number by the original number
166 - 123 = 43
43 ÷ 123 = 0.34959349593495936
0.34959349593495936 x 100 = 34.96%