48.19% is the change from 83 to 123
Calculation steps:
[( 123 - 83 ) ÷ 83] x 100 = 48.19%
Formula
Percentage change = [(123 - 83) / 83] x 100
Subtract the new number by the original number
123 - 83 = 40
40 ÷ 83 = 0.4819277108433735
0.4819277108433735 x 100 = 48.19%