50.72% is the change from 138 to 208
Calculation steps:
[( 208 - 138 ) ÷ 138] x 100 = 50.72%
Formula
Percentage change = [(208 - 138) / 138] x 100
Subtract the new number by the original number
208 - 138 = 70
70 ÷ 138 = 0.5072463768115942
0.5072463768115942 x 100 = 50.72%