138.6% is the change from 215 to 513
Calculation steps:
[( 513 - 215 ) ÷ 215] x 100 = 138.6%
Formula
Percentage change = [(513 - 215) / 215] x 100
Subtract the new number by the original number
513 - 215 = 298
298 ÷ 215 = 1.386046511627907
1.386046511627907 x 100 = 138.6%