-10.8% is the change from 685 to 611
Calculation steps:
[( 611 - 685 ) ÷ 685] x 100 = -10.8%
Formula
Percentage change = [(611 - 685) / 685] x 100
Subtract the new number by the original number
611 - 685 = -74
-74 ÷ 685 = -0.10802919708029197
-0.10802919708029197 x 100 = -10.8%