-57.59% is the change from 606 to 257
Calculation steps:
[( 257 - 606 ) ÷ 606] x 100 = -57.59%
Formula
Percentage change = [(257 - 606) / 606] x 100
Subtract the new number by the original number
257 - 606 = -349
-349 ÷ 606 = -0.5759075907590759
-0.5759075907590759 x 100 = -57.59%