-51.25% is the change from 679 to 331
Calculation steps:
[( 331 - 679 ) ÷ 679] x 100 = -51.25%
Formula
Percentage change = [(331 - 679) / 679] x 100
Subtract the new number by the original number
331 - 679 = -348
-348 ÷ 679 = -0.5125184094256259
-0.5125184094256259 x 100 = -51.25%