62.67% is the change from 509 to 828
Calculation steps:
[( 828 - 509 ) ÷ 509] x 100 = 62.67%
Formula
Percentage change = [(828 - 509) / 509] x 100
Subtract the new number by the original number
828 - 509 = 319
319 ÷ 509 = 0.6267190569744597
0.6267190569744597 x 100 = 62.67%