-57.66% is the change from 607 to 257
Calculation steps:
[( 257 - 607 ) ÷ 607] x 100 = -57.66%
Formula
Percentage change = [(257 - 607) / 607] x 100
Subtract the new number by the original number
257 - 607 = -350
-350 ÷ 607 = -0.5766062602965404
-0.5766062602965404 x 100 = -57.66%