14% is the change from 50 to 57
Calculation steps:
[( 57 - 50 ) ÷ 50] x 100 = 14%
Formula
Percentage change = [(57 - 50) / 50] x 100
Subtract the new number by the original number
57 - 50 = 7
7 ÷ 50 = 0.14
0.14 x 100 = 14%
Example