84.27% is the change from 515 to 949
Calculation steps:
[( 949 - 515 ) ÷ 515] x 100 = 84.27%
Formula
Percentage change = [(949 - 515) / 515] x 100
Subtract the new number by the original number
949 - 515 = 434
434 ÷ 515 = 0.8427184466019417
0.8427184466019417 x 100 = 84.27%