58% is the change from 50 to 79
Calculation steps:
[( 79 - 50 ) ÷ 50] x 100 = 58%
Formula
Percentage change = [(79 - 50) / 50] x 100
Subtract the new number by the original number
79 - 50 = 29
29 ÷ 50 = 0.58
0.58 x 100 = 58%
Example