53.75% is the change from 80 to 123
Calculation steps:
[( 123 - 80 ) ÷ 80] x 100 = 53.75%
Formula
Percentage change = [(123 - 80) / 80] x 100
Subtract the new number by the original number
123 - 80 = 43
43 ÷ 80 = 0.5375
0.5375 x 100 = 53.75%
Example