137.33% is the change from 217 to 515
Calculation steps:
[( 515 - 217 ) ÷ 217] x 100 = 137.33%
Formula
Percentage change = [(515 - 217) / 217] x 100
Subtract the new number by the original number
515 - 217 = 298
298 ÷ 217 = 1.3732718894009217
1.3732718894009217 x 100 = 137.33%