-80.19% is the change from 429 to 85
Calculation steps:
[( 85 - 429 ) ÷ 429] x 100 = -80.19%
Formula
Percentage change = [(85 - 429) / 429] x 100
Subtract the new number by the original number
85 - 429 = -344
-344 ÷ 429 = -0.8018648018648019
-0.8018648018648019 x 100 = -80.19%