86.23% is the change from 138 to 257
Calculation steps:
[( 257 - 138 ) ÷ 138] x 100 = 86.23%
Formula
Percentage change = [(257 - 138) / 138] x 100
Subtract the new number by the original number
257 - 138 = 119
119 ÷ 138 = 0.8623188405797102
0.8623188405797102 x 100 = 86.23%