57.25% is the change from 138 to 217
Calculation steps:
[( 217 - 138 ) ÷ 138] x 100 = 57.25%
Formula
Percentage change = [(217 - 138) / 138] x 100
Subtract the new number by the original number
217 - 138 = 79
79 ÷ 138 = 0.572463768115942
0.572463768115942 x 100 = 57.25%