55.96% is the change from 520 to 811
Calculation steps:
[( 811 - 520 ) ÷ 520] x 100 = 55.96%
Formula
Percentage change = [(811 - 520) / 520] x 100
Subtract the new number by the original number
811 - 520 = 291
291 ÷ 520 = 0.5596153846153846
0.5596153846153846 x 100 = 55.96%