-62.43% is the change from 684 to 257
Calculation steps:
[( 257 - 684 ) ÷ 684] x 100 = -62.43%
Formula
Percentage change = [(257 - 684) / 684] x 100
Subtract the new number by the original number
257 - 684 = -427
-427 ÷ 684 = -0.6242690058479532
-0.6242690058479532 x 100 = -62.43%