-75.71% is the change from 350 to 85
Calculation steps:
[( 85 - 350 ) ÷ 350] x 100 = -75.71%
Formula
Percentage change = [(85 - 350) / 350] x 100
Subtract the new number by the original number
85 - 350 = -265
-265 ÷ 350 = -0.7571428571428571
-0.7571428571428571 x 100 = -75.71%