49.9% is the change from 515 to 772
Calculation steps:
[( 772 - 515 ) ÷ 515] x 100 = 49.9%
Formula
Percentage change = [(772 - 515) / 515] x 100
Subtract the new number by the original number
772 - 515 = 257
257 ÷ 515 = 0.49902912621359224
0.49902912621359224 x 100 = 49.9%