-72.99% is the change from 685 to 185
Calculation steps:
[( 185 - 685 ) ÷ 685] x 100 = -72.99%
Formula
Percentage change = [(185 - 685) / 685] x 100
Subtract the new number by the original number
185 - 685 = -500
-500 ÷ 685 = -0.7299270072992701
-0.7299270072992701 x 100 = -72.99%