-76.06% is the change from 355 to 85
Calculation steps:
[( 85 - 355 ) ÷ 355] x 100 = -76.06%
Formula
Percentage change = [(85 - 355) / 355] x 100
Subtract the new number by the original number
85 - 355 = -270
-270 ÷ 355 = -0.7605633802816901
-0.7605633802816901 x 100 = -76.06%