50% is the change from 92 to 138
Calculation steps:
[( 138 - 92 ) ÷ 92] x 100 = 50%
Formula
Percentage change = [(138 - 92) / 92] x 100
Subtract the new number by the original number
138 - 92 = 46
46 ÷ 92 = 0.5
0.5 x 100 = 50%
Example