168.63% is the change from 255 to 685
Calculation steps:
[( 685 - 255 ) ÷ 255] x 100 = 168.63%
Formula
Percentage change = [(685 - 255) / 255] x 100
Subtract the new number by the original number
685 - 255 = 430
430 ÷ 255 = 1.6862745098039216
1.6862745098039216 x 100 = 168.63%