61.55% is the change from 502 to 811
Calculation steps:
[( 811 - 502 ) ÷ 502] x 100 = 61.55%
Formula
Percentage change = [(811 - 502) / 502] x 100
Subtract the new number by the original number
811 - 502 = 309
309 ÷ 502 = 0.6155378486055777
0.6155378486055777 x 100 = 61.55%