79.06% is the change from 511 to 915
Calculation steps:
[( 915 - 511 ) ÷ 511] x 100 = 79.06%
Formula
Percentage change = [(915 - 511) / 511] x 100
Subtract the new number by the original number
915 - 511 = 404
404 ÷ 511 = 0.7906066536203522
0.7906066536203522 x 100 = 79.06%