-57.52% is the change from 605 to 257
Calculation steps:
[( 257 - 605 ) ÷ 605] x 100 = -57.52%
Formula
Percentage change = [(257 - 605) / 605] x 100
Subtract the new number by the original number
257 - 605 = -348
-348 ÷ 605 = -0.5752066115702479
-0.5752066115702479 x 100 = -57.52%