84.47% is the change from 515 to 950
Calculation steps:
[( 950 - 515 ) ÷ 515] x 100 = 84.47%
Formula
Percentage change = [(950 - 515) / 515] x 100
Subtract the new number by the original number
950 - 515 = 435
435 ÷ 515 = 0.8446601941747572
0.8446601941747572 x 100 = 84.47%