71.49% is the change from 505 to 866
Calculation steps:
[( 866 - 505 ) ÷ 505] x 100 = 71.49%
Formula
Percentage change = [(866 - 505) / 505] x 100
Subtract the new number by the original number
866 - 505 = 361
361 ÷ 505 = 0.7148514851485148
0.7148514851485148 x 100 = 71.49%