176% is the change from 50 to 138
Calculation steps:
[( 138 - 50 ) ÷ 50] x 100 = 176%
Formula
Percentage change = [(138 - 50) / 50] x 100
Subtract the new number by the original number
138 - 50 = 88
88 ÷ 50 = 1.76
1.76 x 100 = 176%
Example