280.56% is the change from 180 to 685
Calculation steps:
[( 685 - 180 ) ÷ 180] x 100 = 280.56%
Formula
Percentage change = [(685 - 180) / 180] x 100
Subtract the new number by the original number
685 - 180 = 505
505 ÷ 180 = 2.8055555555555554
2.8055555555555554 x 100 = 280.56%