138.25% is the change from 217 to 517
Calculation steps:
[( 517 - 217 ) ÷ 217] x 100 = 138.25%
Formula
Percentage change = [(517 - 217) / 217] x 100
Subtract the new number by the original number
517 - 217 = 300
300 ÷ 217 = 1.3824884792626728
1.3824884792626728 x 100 = 138.25%