-62.15% is the change from 679 to 257
Calculation steps:
[( 257 - 679 ) ÷ 679] x 100 = -62.15%
Formula
Percentage change = [(257 - 679) / 679] x 100
Subtract the new number by the original number
257 - 679 = -422
-422 ÷ 679 = -0.6215022091310751
-0.6215022091310751 x 100 = -62.15%