69.07% is the change from 485 to 820
Calculation steps:
[( 820 - 485 ) ÷ 485] x 100 = 69.07%
Formula
Percentage change = [(820 - 485) / 485] x 100
Subtract the new number by the original number
820 - 485 = 335
335 ÷ 485 = 0.6907216494845361
0.6907216494845361 x 100 = 69.07%