1.65% is the change from 121 to 123
Calculation steps:
[( 123 - 121 ) ÷ 121] x 100 = 1.65%
Formula
Percentage change = [(123 - 121) / 121] x 100
Subtract the new number by the original number
123 - 121 = 2
2 ÷ 121 = 0.01652892561983471
0.01652892561983471 x 100 = 1.65%