68.12% is the change from 505 to 849
Calculation steps:
[( 849 - 505 ) ÷ 505] x 100 = 68.12%
Formula
Percentage change = [(849 - 505) / 505] x 100
Subtract the new number by the original number
849 - 505 = 344
344 ÷ 505 = 0.6811881188118812
0.6811881188118812 x 100 = 68.12%