-57.92% is the change from 606 to 255
Calculation steps:
[( 255 - 606 ) ÷ 606] x 100 = -57.92%
Formula
Percentage change = [(255 - 606) / 606] x 100
Subtract the new number by the original number
255 - 606 = -351
-351 ÷ 606 = -0.5792079207920792
-0.5792079207920792 x 100 = -57.92%