64.97% is the change from 511 to 843
Calculation steps:
[( 843 - 511 ) ÷ 511] x 100 = 64.97%
Formula
Percentage change = [(843 - 511) / 511] x 100
Subtract the new number by the original number
843 - 511 = 332
332 ÷ 511 = 0.649706457925636
0.649706457925636 x 100 = 64.97%