24.09% is the change from 685 to 850
Calculation steps:
[( 850 - 685 ) ÷ 685] x 100 = 24.09%
Formula
Percentage change = [(850 - 685) / 685] x 100
Subtract the new number by the original number
850 - 685 = 165
165 ÷ 685 = 0.24087591240875914
0.24087591240875914 x 100 = 24.09%