85.71% is the change from 511 to 949
Calculation steps:
[( 949 - 511 ) ÷ 511] x 100 = 85.71%
Formula
Percentage change = [(949 - 511) / 511] x 100
Subtract the new number by the original number
949 - 511 = 438
438 ÷ 511 = 0.8571428571428571
0.8571428571428571 x 100 = 85.71%