-69.2% is the change from 685 to 211
Calculation steps:
[( 211 - 685 ) ÷ 685] x 100 = -69.2%
Formula
Percentage change = [(211 - 685) / 685] x 100
Subtract the new number by the original number
211 - 685 = -474
-474 ÷ 685 = -0.691970802919708
-0.691970802919708 x 100 = -69.2%