60.59% is the change from 505 to 811
Calculation steps:
[( 811 - 505 ) ÷ 505] x 100 = 60.59%
Formula
Percentage change = [(811 - 505) / 505] x 100
Subtract the new number by the original number
811 - 505 = 306
306 ÷ 505 = 0.6059405940594059
0.6059405940594059 x 100 = 60.59%