-62.59% is the change from 687 to 257
Calculation steps:
[( 257 - 687 ) ÷ 687] x 100 = -62.59%
Formula
Percentage change = [(257 - 687) / 687] x 100
Subtract the new number by the original number
257 - 687 = -430
-430 ÷ 687 = -0.6259097525473072
-0.6259097525473072 x 100 = -62.59%