-57.31% is the change from 602 to 257
Calculation steps:
[( 257 - 602 ) ÷ 602] x 100 = -57.31%
Formula
Percentage change = [(257 - 602) / 602] x 100
Subtract the new number by the original number
257 - 602 = -345
-345 ÷ 602 = -0.5730897009966778
-0.5730897009966778 x 100 = -57.31%