-57.1% is the change from 599 to 257
Calculation steps:
[( 257 - 599 ) ÷ 599] x 100 = -57.1%
Formula
Percentage change = [(257 - 599) / 599] x 100
Subtract the new number by the original number
257 - 599 = -342
-342 ÷ 599 = -0.5709515859766278
-0.5709515859766278 x 100 = -57.1%