80.23% is the change from 511 to 921
Calculation steps:
[( 921 - 511 ) ÷ 511] x 100 = 80.23%
Formula
Percentage change = [(921 - 511) / 511] x 100
Subtract the new number by the original number
921 - 511 = 410
410 ÷ 511 = 0.8023483365949119
0.8023483365949119 x 100 = 80.23%