-51.96% is the change from 689 to 331
Calculation steps:
[( 331 - 689 ) ÷ 689] x 100 = -51.96%
Formula
Percentage change = [(331 - 689) / 689] x 100
Subtract the new number by the original number
331 - 689 = -358
-358 ÷ 689 = -0.5195936139332366
-0.5195936139332366 x 100 = -51.96%